256387500

素因数分解:

$2^2\times 3^2\times 5^5\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 216

約数和(自身を含む): 844539696

約数和(自身を除く): 588152196

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 43, 45, 50, 53, 60, 75, 86, 90, 100, 106, 125, 129, 150, 159, 172, 180, 212, 215, 225, 250, 258, 265, 300, 318, 375, 387, 430, 450, 477, 500, 516, 530, 625, 636, 645, 750, 774, 795, 860, 900, 954, 1060, 1075, 1125, 1250, 1290, 1325, 1500, 1548, 1590, 1875, 1908, 1935, 2150, 2250, 2279, 2385, 2500, 2580, 2650, 3125, 3180, 3225, 3750, 3870, 3975, 4300, 4500, 4558, 4770, 5300, 5375, 5625, 6250, 6450, 6625, 6837, 7500, 7740, 7950, 9116, 9375, 9540, 9675, 10750, 11250, 11395, 11925, 12500, 12900, 13250, 13674, 15900, 16125, 18750, 19350, 19875, 20511, 21500, 22500, 22790, 23850, 26500, 26875, 27348, 28125, 32250, 33125, 34185, 37500, 38700, 39750, 41022, 45580, 47700, 48375, 53750, 56250, 56975, 59625, 64500, 66250, 68370, 79500, 80625, 82044, 96750, 99375, 102555, 107500, 112500, 113950, 119250, 132500, 134375, 136740, 161250, 165625, 170925, 193500, 198750, 205110, 227900, 238500, 241875, 268750, 284875, 298125, 322500, 331250, 341850, 397500, 403125, 410220, 483750, 496875, 512775, 537500, 569750, 596250, 662500, 683700, 806250, 854625, 967500, 993750, 1025550, 1139500, 1192500, 1209375, 1424375, 1490625, 1612500, 1709250, 1987500, 2051100, 2418750, 2563875, 2848750, 2981250, 3418500, 4273125, 4837500, 5127750, 5697500, 5962500, 7121875, 8546250, 10255500, 12819375, 14243750, 17092500, 21365625, 25638750, 28487500, 42731250, 51277500, 64096875, 85462500, 128193750, 256387500]

約数ペア:

[(1, 256387500), (2, 128193750), (3, 85462500), (4, 64096875), (5, 51277500), (6, 42731250), (9, 28487500), (10, 25638750), (12, 21365625), (15, 17092500), (18, 14243750), (20, 12819375), (25, 10255500), (30, 8546250), (36, 7121875), (43, 5962500), (45, 5697500), (50, 5127750), (53, 4837500), (60, 4273125), (75, 3418500), (86, 2981250), (90, 2848750), (100, 2563875), (106, 2418750), (125, 2051100), (129, 1987500), (150, 1709250), (159, 1612500), (172, 1490625), (180, 1424375), (212, 1209375), (215, 1192500), (225, 1139500), (250, 1025550), (258, 993750), (265, 967500), (300, 854625), (318, 806250), (375, 683700), (387, 662500), (430, 596250), (450, 569750), (477, 537500), (500, 512775), (516, 496875), (530, 483750), (625, 410220), (636, 403125), (645, 397500), (750, 341850), (774, 331250), (795, 322500), (860, 298125), (900, 284875), (954, 268750), (1060, 241875), (1075, 238500), (1125, 227900), (1250, 205110), (1290, 198750), (1325, 193500), (1500, 170925), (1548, 165625), (1590, 161250), (1875, 136740), (1908, 134375), (1935, 132500), (2150, 119250), (2250, 113950), (2279, 112500), (2385, 107500), (2500, 102555), (2580, 99375), (2650, 96750), (3125, 82044), (3180, 80625), (3225, 79500), (3750, 68370), (3870, 66250), (3975, 64500), (4300, 59625), (4500, 56975), (4558, 56250), (4770, 53750), (5300, 48375), (5375, 47700), (5625, 45580), (6250, 41022), (6450, 39750), (6625, 38700), (6837, 37500), (7500, 34185), (7740, 33125), (7950, 32250), (9116, 28125), (9375, 27348), (9540, 26875), (9675, 26500), (10750, 23850), (11250, 22790), (11395, 22500), (11925, 21500), (12500, 20511), (12900, 19875), (13250, 19350), (13674, 18750), (15900, 16125)]