20199972400

素因数分解:

$2^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{31741}}^1$

素因数の和:31839

約数の個数: 120

約数和(自身を含む): 51002791664

約数和(自身を除く): 30802819264

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 43, 50, 74, 80, 86, 100, 148, 172, 185, 200, 215, 296, 344, 370, 400, 430, 592, 688, 740, 860, 925, 1075, 1480, 1591, 1720, 1850, 2150, 2960, 3182, 3440, 3700, 4300, 6364, 7400, 7955, 8600, 12728, 14800, 15910, 17200, 25456, 31741, 31820, 39775, 63482, 63640, 79550, 126964, 127280, 158705, 159100, 253928, 317410, 318200, 507856, 634820, 636400, 793525, 1174417, 1269640, 1364863, 1587050, 2348834, 2539280, 2729726, 3174100, 4697668, 5459452, 5872085, 6348200, 6824315, 9395336, 10918904, 11744170, 12696400, 13648630, 18790672, 21837808, 23488340, 27297260, 29360425, 34121575, 46976680, 50499931, 54594520, 58720850, 68243150, 93953360, 100999862, 109189040, 117441700, 136486300, 201999724, 234883400, 252499655, 272972600, 403999448, 469766800, 504999310, 545945200, 807998896, 1009998620, 1262498275, 2019997240, 2524996550, 4039994480, 5049993100, 10099986200, 20199972400]

約数ペア:

[(1, 20199972400), (2, 10099986200), (4, 5049993100), (5, 4039994480), (8, 2524996550), (10, 2019997240), (16, 1262498275), (20, 1009998620), (25, 807998896), (37, 545945200), (40, 504999310), (43, 469766800), (50, 403999448), (74, 272972600), (80, 252499655), (86, 234883400), (100, 201999724), (148, 136486300), (172, 117441700), (185, 109189040), (200, 100999862), (215, 93953360), (296, 68243150), (344, 58720850), (370, 54594520), (400, 50499931), (430, 46976680), (592, 34121575), (688, 29360425), (740, 27297260), (860, 23488340), (925, 21837808), (1075, 18790672), (1480, 13648630), (1591, 12696400), (1720, 11744170), (1850, 10918904), (2150, 9395336), (2960, 6824315), (3182, 6348200), (3440, 5872085), (3700, 5459452), (4300, 4697668), (6364, 3174100), (7400, 2729726), (7955, 2539280), (8600, 2348834), (12728, 1587050), (14800, 1364863), (15910, 1269640), (17200, 1174417), (25456, 793525), (31741, 636400), (31820, 634820), (39775, 507856), (63482, 318200), (63640, 317410), (79550, 253928), (126964, 159100), (127280, 158705)]