20888368

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{313}}^1$

素因数の和:461

約数の個数: 40

約数和(自身を含む): 41973008

約数和(自身を除く): 21084640

約数列:

[1, 2, 4, 8, 16, 43, 86, 97, 172, 194, 313, 344, 388, 626, 688, 776, 1252, 1552, 2504, 4171, 5008, 8342, 13459, 16684, 26918, 30361, 33368, 53836, 60722, 66736, 107672, 121444, 215344, 242888, 485776, 1305523, 2611046, 5222092, 10444184, 20888368]

約数ペア:

[(1, 20888368), (2, 10444184), (4, 5222092), (8, 2611046), (16, 1305523), (43, 485776), (86, 242888), (97, 215344), (172, 121444), (194, 107672), (313, 66736), (344, 60722), (388, 53836), (626, 33368), (688, 30361), (776, 26918), (1252, 16684), (1552, 13459), (2504, 8342), (4171, 5008)]