1644819940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1\times {\mathrm{7561}}^1$

素因数の和:7792

約数の個数: 48

約数和(自身を含む): 3525404400

約数和(自身を除く): 1880584460

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 149, 292, 298, 365, 596, 730, 745, 1460, 1490, 2980, 7561, 10877, 15122, 21754, 30244, 37805, 43508, 54385, 75610, 108770, 151220, 217540, 551953, 1103906, 1126589, 2207812, 2253178, 2759765, 4506356, 5519530, 5632945, 11039060, 11265890, 22531780, 82240997, 164481994, 328963988, 411204985, 822409970, 1644819940]

約数ペア:

[(1, 1644819940), (2, 822409970), (4, 411204985), (5, 328963988), (10, 164481994), (20, 82240997), (73, 22531780), (146, 11265890), (149, 11039060), (292, 5632945), (298, 5519530), (365, 4506356), (596, 2759765), (730, 2253178), (745, 2207812), (1460, 1126589), (1490, 1103906), (2980, 551953), (7561, 217540), (10877, 151220), (15122, 108770), (21754, 75610), (30244, 54385), (37805, 43508)]