21445125

素因数分解:

$3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 39626496

約数和(自身を除く): 18181371

約数列:

[1, 3, 5, 13, 15, 25, 39, 53, 65, 75, 83, 125, 159, 195, 249, 265, 325, 375, 415, 689, 795, 975, 1079, 1245, 1325, 1625, 2067, 2075, 3237, 3445, 3975, 4399, 4875, 5395, 6225, 6625, 10335, 10375, 13197, 16185, 17225, 19875, 21995, 26975, 31125, 51675, 57187, 65985, 80925, 86125, 109975, 134875, 171561, 258375, 285935, 329925, 404625, 549875, 857805, 1429675, 1649625, 4289025, 7148375, 21445125]

約数ペア:

[(1, 21445125), (3, 7148375), (5, 4289025), (13, 1649625), (15, 1429675), (25, 857805), (39, 549875), (53, 404625), (65, 329925), (75, 285935), (83, 258375), (125, 171561), (159, 134875), (195, 109975), (249, 86125), (265, 80925), (325, 65985), (375, 57187), (415, 51675), (689, 31125), (795, 26975), (975, 21995), (1079, 19875), (1245, 17225), (1325, 16185), (1625, 13197), (2067, 10375), (2075, 10335), (3237, 6625), (3445, 6225), (3975, 5395), (4399, 4875)]