21658736

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1129}}^1$

素因数の和:1257

約数の個数: 40

約数和(自身を含む): 46239600

約数和(自身を除く): 24580864

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 109, 176, 218, 436, 872, 1129, 1199, 1744, 2258, 2398, 4516, 4796, 9032, 9592, 12419, 18064, 19184, 24838, 49676, 99352, 123061, 198704, 246122, 492244, 984488, 1353671, 1968976, 2707342, 5414684, 10829368, 21658736]

約数ペア:

[(1, 21658736), (2, 10829368), (4, 5414684), (8, 2707342), (11, 1968976), (16, 1353671), (22, 984488), (44, 492244), (88, 246122), (109, 198704), (176, 123061), (218, 99352), (436, 49676), (872, 24838), (1129, 19184), (1199, 18064), (1744, 12419), (2258, 9592), (2398, 9032), (4516, 4796)]