19815572

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{617}}^1$

素因数の和:696

約数の個数: 48

約数和(自身を含む): 42083328

約数和(自身を除く): 22267756

約数列:

[1, 2, 4, 7, 14, 28, 31, 37, 62, 74, 124, 148, 217, 259, 434, 518, 617, 868, 1036, 1147, 1234, 2294, 2468, 4319, 4588, 8029, 8638, 16058, 17276, 19127, 22829, 32116, 38254, 45658, 76508, 91316, 133889, 159803, 267778, 319606, 535556, 639212, 707699, 1415398, 2830796, 4953893, 9907786, 19815572]

約数ペア:

[(1, 19815572), (2, 9907786), (4, 4953893), (7, 2830796), (14, 1415398), (28, 707699), (31, 639212), (37, 535556), (62, 319606), (74, 267778), (124, 159803), (148, 133889), (217, 91316), (259, 76508), (434, 45658), (518, 38254), (617, 32116), (868, 22829), (1036, 19127), (1147, 17276), (1234, 16058), (2294, 8638), (2468, 8029), (4319, 4588)]