18745875

素因数分解:

$3^2\times 5^3\times {\mathrm{19}}^1\times {\mathrm{877}}^1$

素因数の和:917

約数の個数: 48

約数和(自身を含む): 35611680

約数和(自身を除く): 16865805

約数列:

[1, 3, 5, 9, 15, 19, 25, 45, 57, 75, 95, 125, 171, 225, 285, 375, 475, 855, 877, 1125, 1425, 2375, 2631, 4275, 4385, 7125, 7893, 13155, 16663, 21375, 21925, 39465, 49989, 65775, 83315, 109625, 149967, 197325, 249945, 328875, 416575, 749835, 986625, 1249725, 2082875, 3749175, 6248625, 18745875]

約数ペア:

[(1, 18745875), (3, 6248625), (5, 3749175), (9, 2082875), (15, 1249725), (19, 986625), (25, 749835), (45, 416575), (57, 328875), (75, 249945), (95, 197325), (125, 149967), (171, 109625), (225, 83315), (285, 65775), (375, 49989), (475, 39465), (855, 21925), (877, 21375), (1125, 16663), (1425, 13155), (2375, 7893), (2631, 7125), (4275, 4385)]