21388108

素因数分解:

$2^2\times 7^4\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:180

約数の個数: 60

約数和(自身を含む): 46586232

約数和(自身を除く): 25198124

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 68, 98, 119, 131, 196, 238, 262, 343, 476, 524, 686, 833, 917, 1372, 1666, 1834, 2227, 2401, 3332, 3668, 4454, 4802, 5831, 6419, 8908, 9604, 11662, 12838, 15589, 23324, 25676, 31178, 40817, 44933, 62356, 81634, 89866, 109123, 163268, 179732, 218246, 314531, 436492, 629062, 763861, 1258124, 1527722, 3055444, 5347027, 10694054, 21388108]

約数ペア:

[(1, 21388108), (2, 10694054), (4, 5347027), (7, 3055444), (14, 1527722), (17, 1258124), (28, 763861), (34, 629062), (49, 436492), (68, 314531), (98, 218246), (119, 179732), (131, 163268), (196, 109123), (238, 89866), (262, 81634), (343, 62356), (476, 44933), (524, 40817), (686, 31178), (833, 25676), (917, 23324), (1372, 15589), (1666, 12838), (1834, 11662), (2227, 9604), (2401, 8908), (3332, 6419), (3668, 5831), (4454, 4802)]