20382440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2063}}^1$

素因数の和:2106

約数の個数: 64

約数和(自身を含む): 52012800

約数和(自身を除く): 31630360

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2063, 2470, 4126, 4940, 8252, 9880, 10315, 16504, 20630, 26819, 39197, 41260, 53638, 78394, 82520, 107276, 134095, 156788, 195985, 214552, 268190, 313576, 391970, 509561, 536380, 783940, 1019122, 1072760, 1567880, 2038244, 2547805, 4076488, 5095610, 10191220, 20382440]

約数ペア:

[(1, 20382440), (2, 10191220), (4, 5095610), (5, 4076488), (8, 2547805), (10, 2038244), (13, 1567880), (19, 1072760), (20, 1019122), (26, 783940), (38, 536380), (40, 509561), (52, 391970), (65, 313576), (76, 268190), (95, 214552), (104, 195985), (130, 156788), (152, 134095), (190, 107276), (247, 82520), (260, 78394), (380, 53638), (494, 41260), (520, 39197), (760, 26819), (988, 20630), (1235, 16504), (1976, 10315), (2063, 9880), (2470, 8252), (4126, 4940)]