21532225

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{317}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 33122880

約数和(自身を除く): 11590655

約数列:

[1, 5, 11, 13, 19, 25, 55, 65, 95, 143, 209, 247, 275, 317, 325, 475, 715, 1045, 1235, 1585, 2717, 3487, 3575, 4121, 5225, 6023, 6175, 7925, 13585, 17435, 20605, 30115, 45331, 66253, 67925, 78299, 87175, 103025, 150575, 226655, 331265, 391495, 861289, 1133275, 1656325, 1957475, 4306445, 21532225]

約数ペア:

[(1, 21532225), (5, 4306445), (11, 1957475), (13, 1656325), (19, 1133275), (25, 861289), (55, 391495), (65, 331265), (95, 226655), (143, 150575), (209, 103025), (247, 87175), (275, 78299), (317, 67925), (325, 66253), (475, 45331), (715, 30115), (1045, 20605), (1235, 17435), (1585, 13585), (2717, 7925), (3487, 6175), (3575, 6023), (4121, 5225)]