221493255

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{3229}}^1$

素因数の和:3523

約数の個数: 32

約数和(自身を含む): 376747200

約数和(自身を除く): 155253945

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 269, 807, 1345, 3229, 4035, 4573, 9687, 13719, 16145, 22865, 48435, 54893, 68595, 164679, 274465, 823395, 868601, 2605803, 4343005, 13029015, 14766217, 44298651, 73831085, 221493255]

約数ペア:

[(1, 221493255), (3, 73831085), (5, 44298651), (15, 14766217), (17, 13029015), (51, 4343005), (85, 2605803), (255, 868601), (269, 823395), (807, 274465), (1345, 164679), (3229, 68595), (4035, 54893), (4573, 48435), (9687, 22865), (13719, 16145)]