2639960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2129}}^1$

素因数の和:2171

約数の個数: 32

約数和(自身を含む): 6134400

約数和(自身を除く): 3494440

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 2129, 4258, 8516, 10645, 17032, 21290, 42580, 65999, 85160, 131998, 263996, 329995, 527992, 659990, 1319980, 2639960]

約数ペア:

[(1, 2639960), (2, 1319980), (4, 659990), (5, 527992), (8, 329995), (10, 263996), (20, 131998), (31, 85160), (40, 65999), (62, 42580), (124, 21290), (155, 17032), (248, 10645), (310, 8516), (620, 4258), (1240, 2129)]