128716340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 72

約数和(自身を含む): 288438696

約数和(自身を除く): 159722356

約数列:

[1, 2, 4, 5, 10, 20, 31, 37, 62, 74, 124, 148, 155, 181, 185, 310, 362, 370, 620, 724, 740, 905, 961, 1147, 1810, 1922, 2294, 3620, 3844, 4588, 4805, 5611, 5735, 6697, 9610, 11222, 11470, 13394, 19220, 22444, 22940, 26788, 28055, 33485, 35557, 56110, 66970, 71114, 112220, 133940, 142228, 173941, 177785, 207607, 347882, 355570, 415214, 695764, 711140, 830428, 869705, 1038035, 1739410, 2076070, 3478820, 4152140, 6435817, 12871634, 25743268, 32179085, 64358170, 128716340]

約数ペア:

[(1, 128716340), (2, 64358170), (4, 32179085), (5, 25743268), (10, 12871634), (20, 6435817), (31, 4152140), (37, 3478820), (62, 2076070), (74, 1739410), (124, 1038035), (148, 869705), (155, 830428), (181, 711140), (185, 695764), (310, 415214), (362, 355570), (370, 347882), (620, 207607), (724, 177785), (740, 173941), (905, 142228), (961, 133940), (1147, 112220), (1810, 71114), (1922, 66970), (2294, 56110), (3620, 35557), (3844, 33485), (4588, 28055), (4805, 26788), (5611, 22940), (5735, 22444), (6697, 19220), (9610, 13394), (11222, 11470)]