28019875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:472

約数の個数: 32

約数和(自身を含む): 38630592

約数和(自身を除く): 10610717

約数列:

[1, 5, 13, 25, 43, 65, 125, 215, 325, 401, 559, 1075, 1625, 2005, 2795, 5213, 5375, 10025, 13975, 17243, 26065, 50125, 69875, 86215, 130325, 224159, 431075, 651625, 1120795, 2155375, 5603975, 28019875]

約数ペア:

[(1, 28019875), (5, 5603975), (13, 2155375), (25, 1120795), (43, 651625), (65, 431075), (125, 224159), (215, 130325), (325, 86215), (401, 69875), (559, 50125), (1075, 26065), (1625, 17243), (2005, 13975), (2795, 10025), (5213, 5375)]