19908665

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 8845255

約数列:

[1, 5, 7, 31, 35, 59, 155, 217, 295, 311, 413, 1085, 1555, 1829, 2065, 2177, 9145, 9641, 10885, 12803, 18349, 48205, 64015, 67487, 91745, 128443, 337435, 568819, 642215, 2844095, 3981733, 19908665]

約数ペア:

[(1, 19908665), (5, 3981733), (7, 2844095), (31, 642215), (35, 568819), (59, 337435), (155, 128443), (217, 91745), (295, 67487), (311, 64015), (413, 48205), (1085, 18349), (1555, 12803), (1829, 10885), (2065, 9641), (2177, 9145)]