13221975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 23998464

約数和(自身を除く): 10776489

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 71, 75, 191, 195, 213, 325, 355, 573, 923, 955, 975, 1065, 1775, 2483, 2769, 2865, 4615, 4775, 5325, 7449, 12415, 13561, 13845, 14325, 23075, 37245, 40683, 62075, 67805, 69225, 176293, 186225, 203415, 339025, 528879, 881465, 1017075, 2644395, 4407325, 13221975]

約数ペア:

[(1, 13221975), (3, 4407325), (5, 2644395), (13, 1017075), (15, 881465), (25, 528879), (39, 339025), (65, 203415), (71, 186225), (75, 176293), (191, 69225), (195, 67805), (213, 62075), (325, 40683), (355, 37245), (573, 23075), (923, 14325), (955, 13845), (975, 13561), (1065, 12415), (1775, 7449), (2483, 5325), (2769, 4775), (2865, 4615)]