81345940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:329

約数の個数: 96

約数和(自身を含む): 195987456

約数和(自身を除く): 114641516

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 61, 65, 92, 115, 122, 130, 223, 230, 244, 260, 299, 305, 446, 460, 598, 610, 793, 892, 1115, 1196, 1220, 1403, 1495, 1586, 2230, 2806, 2899, 2990, 3172, 3965, 4460, 5129, 5612, 5798, 5980, 7015, 7930, 10258, 11596, 13603, 14030, 14495, 15860, 18239, 20516, 25645, 27206, 28060, 28990, 36478, 51290, 54412, 57980, 66677, 68015, 72956, 91195, 102580, 133354, 136030, 176839, 182390, 266708, 272060, 312869, 333385, 353678, 364780, 625738, 666770, 707356, 884195, 1251476, 1333540, 1564345, 1768390, 3128690, 3536780, 4067297, 6257380, 8134594, 16269188, 20336485, 40672970, 81345940]

約数ペア:

[(1, 81345940), (2, 40672970), (4, 20336485), (5, 16269188), (10, 8134594), (13, 6257380), (20, 4067297), (23, 3536780), (26, 3128690), (46, 1768390), (52, 1564345), (61, 1333540), (65, 1251476), (92, 884195), (115, 707356), (122, 666770), (130, 625738), (223, 364780), (230, 353678), (244, 333385), (260, 312869), (299, 272060), (305, 266708), (446, 182390), (460, 176839), (598, 136030), (610, 133354), (793, 102580), (892, 91195), (1115, 72956), (1196, 68015), (1220, 66677), (1403, 57980), (1495, 54412), (1586, 51290), (2230, 36478), (2806, 28990), (2899, 28060), (2990, 27206), (3172, 25645), (3965, 20516), (4460, 18239), (5129, 15860), (5612, 14495), (5798, 14030), (5980, 13603), (7015, 11596), (7930, 10258)]