256501830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1987}}^1$

素因数の和:2341

約数の個数: 64

約数和(自身を含む): 665296128

約数和(自身を除く): 408794298

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 331, 390, 662, 993, 1655, 1986, 1987, 3310, 3974, 4303, 4965, 5961, 8606, 9930, 9935, 11922, 12909, 19870, 21515, 25818, 25831, 29805, 43030, 51662, 59610, 64545, 77493, 129090, 129155, 154986, 258310, 387465, 657697, 774930, 1315394, 1973091, 3288485, 3946182, 6576970, 8550061, 9865455, 17100122, 19730910, 25650183, 42750305, 51300366, 85500610, 128250915, 256501830]

約数ペア:

[(1, 256501830), (2, 128250915), (3, 85500610), (5, 51300366), (6, 42750305), (10, 25650183), (13, 19730910), (15, 17100122), (26, 9865455), (30, 8550061), (39, 6576970), (65, 3946182), (78, 3288485), (130, 1973091), (195, 1315394), (331, 774930), (390, 657697), (662, 387465), (993, 258310), (1655, 154986), (1986, 129155), (1987, 129090), (3310, 77493), (3974, 64545), (4303, 59610), (4965, 51662), (5961, 43030), (8606, 29805), (9930, 25831), (9935, 25818), (11922, 21515), (12909, 19870)]