20457840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1$

素因数の和:191

約数の個数: 160

約数和(自身を含む): 69995520

約数和(自身を除く): 49537680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 79, 80, 83, 104, 120, 130, 156, 158, 166, 195, 208, 237, 240, 249, 260, 312, 316, 332, 390, 395, 415, 474, 498, 520, 624, 632, 664, 780, 790, 830, 948, 996, 1027, 1040, 1079, 1185, 1245, 1264, 1328, 1560, 1580, 1660, 1896, 1992, 2054, 2158, 2370, 2490, 3081, 3120, 3160, 3237, 3320, 3792, 3984, 4108, 4316, 4740, 4980, 5135, 5395, 6162, 6320, 6474, 6557, 6640, 8216, 8632, 9480, 9960, 10270, 10790, 12324, 12948, 13114, 15405, 16185, 16432, 17264, 18960, 19671, 19920, 20540, 21580, 24648, 25896, 26228, 30810, 32370, 32785, 39342, 41080, 43160, 49296, 51792, 52456, 61620, 64740, 65570, 78684, 82160, 85241, 86320, 98355, 104912, 123240, 129480, 131140, 157368, 170482, 196710, 246480, 255723, 258960, 262280, 314736, 340964, 393420, 426205, 511446, 524560, 681928, 786840, 852410, 1022892, 1278615, 1363856, 1573680, 1704820, 2045784, 2557230, 3409640, 4091568, 5114460, 6819280, 10228920, 20457840]

約数ペア:

[(1, 20457840), (2, 10228920), (3, 6819280), (4, 5114460), (5, 4091568), (6, 3409640), (8, 2557230), (10, 2045784), (12, 1704820), (13, 1573680), (15, 1363856), (16, 1278615), (20, 1022892), (24, 852410), (26, 786840), (30, 681928), (39, 524560), (40, 511446), (48, 426205), (52, 393420), (60, 340964), (65, 314736), (78, 262280), (79, 258960), (80, 255723), (83, 246480), (104, 196710), (120, 170482), (130, 157368), (156, 131140), (158, 129480), (166, 123240), (195, 104912), (208, 98355), (237, 86320), (240, 85241), (249, 82160), (260, 78684), (312, 65570), (316, 64740), (332, 61620), (390, 52456), (395, 51792), (415, 49296), (474, 43160), (498, 41080), (520, 39342), (624, 32785), (632, 32370), (664, 30810), (780, 26228), (790, 25896), (830, 24648), (948, 21580), (996, 20540), (1027, 19920), (1040, 19671), (1079, 18960), (1185, 17264), (1245, 16432), (1264, 16185), (1328, 15405), (1560, 13114), (1580, 12948), (1660, 12324), (1896, 10790), (1992, 10270), (2054, 9960), (2158, 9480), (2370, 8632), (2490, 8216), (3081, 6640), (3120, 6557), (3160, 6474), (3237, 6320), (3320, 6162), (3792, 5395), (3984, 5135), (4108, 4980), (4316, 4740)]