221405925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5281}}^1$

素因数の和:5350

約数の個数: 48

約数和(自身を含む): 403460288

約数和(自身を除く): 182054363

約数列:

[1, 3, 5, 13, 15, 25, 39, 43, 65, 75, 129, 195, 215, 325, 559, 645, 975, 1075, 1677, 2795, 3225, 5281, 8385, 13975, 15843, 26405, 41925, 68653, 79215, 132025, 205959, 227083, 343265, 396075, 681249, 1029795, 1135415, 1716325, 2952079, 3406245, 5148975, 5677075, 8856237, 14760395, 17031225, 44281185, 73801975, 221405925]

約数ペア:

[(1, 221405925), (3, 73801975), (5, 44281185), (13, 17031225), (15, 14760395), (25, 8856237), (39, 5677075), (43, 5148975), (65, 3406245), (75, 2952079), (129, 1716325), (195, 1135415), (215, 1029795), (325, 681249), (559, 396075), (645, 343265), (975, 227083), (1075, 205959), (1677, 132025), (2795, 79215), (3225, 68653), (5281, 41925), (8385, 26405), (13975, 15843)]