718185215

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 988243200

約数和(自身を除く): 270057985

約数列:

[1, 5, 11, 31, 55, 121, 149, 155, 257, 341, 605, 745, 1285, 1639, 1705, 2827, 3751, 4619, 7967, 8195, 14135, 18029, 18755, 23095, 31097, 38293, 39835, 50809, 87637, 90145, 155485, 191465, 254045, 421223, 438185, 558899, 964007, 1187083, 2106115, 2794495, 4633453, 4820035, 5935415, 13057913, 23167265, 65289565, 143637043, 718185215]

約数ペア:

[(1, 718185215), (5, 143637043), (11, 65289565), (31, 23167265), (55, 13057913), (121, 5935415), (149, 4820035), (155, 4633453), (257, 2794495), (341, 2106115), (605, 1187083), (745, 964007), (1285, 558899), (1639, 438185), (1705, 421223), (2827, 254045), (3751, 191465), (4619, 155485), (7967, 90145), (8195, 87637), (14135, 50809), (18029, 39835), (18755, 38293), (23095, 31097)]