20414120

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:306

約数の個数: 64

約数和(自身を含む): 48176640

約数和(自身を除く): 27762520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 101, 124, 155, 163, 202, 248, 310, 326, 404, 505, 620, 652, 808, 815, 1010, 1240, 1304, 1630, 2020, 3131, 3260, 4040, 5053, 6262, 6520, 10106, 12524, 15655, 16463, 20212, 25048, 25265, 31310, 32926, 40424, 50530, 62620, 65852, 82315, 101060, 125240, 131704, 164630, 202120, 329260, 510353, 658520, 1020706, 2041412, 2551765, 4082824, 5103530, 10207060, 20414120]

約数ペア:

[(1, 20414120), (2, 10207060), (4, 5103530), (5, 4082824), (8, 2551765), (10, 2041412), (20, 1020706), (31, 658520), (40, 510353), (62, 329260), (101, 202120), (124, 164630), (155, 131704), (163, 125240), (202, 101060), (248, 82315), (310, 65852), (326, 62620), (404, 50530), (505, 40424), (620, 32926), (652, 31310), (808, 25265), (815, 25048), (1010, 20212), (1240, 16463), (1304, 15655), (1630, 12524), (2020, 10106), (3131, 6520), (3260, 6262), (4040, 5053)]