221702975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 308042784

約数和(自身を除く): 86339809

約数列:

[1, 5, 13, 25, 53, 61, 65, 211, 265, 305, 325, 689, 793, 1055, 1325, 1525, 2743, 3233, 3445, 3965, 5275, 11183, 12871, 13715, 16165, 17225, 19825, 42029, 55915, 64355, 68575, 80825, 145379, 167323, 210145, 279575, 321775, 682163, 726895, 836615, 1050725, 3410815, 3634475, 4183075, 8868119, 17054075, 44340595, 221702975]

約数ペア:

[(1, 221702975), (5, 44340595), (13, 17054075), (25, 8868119), (53, 4183075), (61, 3634475), (65, 3410815), (211, 1050725), (265, 836615), (305, 726895), (325, 682163), (689, 321775), (793, 279575), (1055, 210145), (1325, 167323), (1525, 145379), (2743, 80825), (3233, 68575), (3445, 64355), (3965, 55915), (5275, 42029), (11183, 19825), (12871, 17225), (13715, 16165)]