668826875

素因数分解:

$5^4\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:465

約数の個数: 40

約数和(自身を含む): 868109616

約数和(自身を除く): 199282741

約数列:

[1, 5, 25, 53, 61, 125, 265, 305, 331, 625, 1325, 1525, 1655, 3233, 6625, 7625, 8275, 16165, 17543, 20191, 33125, 38125, 41375, 80825, 87715, 100955, 206875, 404125, 438575, 504775, 1070123, 2020625, 2192875, 2523875, 5350615, 10964375, 12619375, 26753075, 133765375, 668826875]

約数ペア:

[(1, 668826875), (5, 133765375), (25, 26753075), (53, 12619375), (61, 10964375), (125, 5350615), (265, 2523875), (305, 2192875), (331, 2020625), (625, 1070123), (1325, 504775), (1525, 438575), (1655, 404125), (3233, 206875), (6625, 100955), (7625, 87715), (8275, 80825), (16165, 41375), (17543, 38125), (20191, 33125)]