20980544

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{167}}^1$

素因数の和:343

約数の個数: 56

約数和(自身を含む): 45403008

約数和(自身を除く): 24422464

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 151, 167, 208, 302, 334, 416, 604, 668, 832, 1208, 1336, 1963, 2171, 2416, 2672, 3926, 4342, 4832, 5344, 7852, 8684, 9664, 10688, 15704, 17368, 25217, 31408, 34736, 50434, 62816, 69472, 100868, 125632, 138944, 201736, 327821, 403472, 655642, 806944, 1311284, 1613888, 2622568, 5245136, 10490272, 20980544]

約数ペア:

[(1, 20980544), (2, 10490272), (4, 5245136), (8, 2622568), (13, 1613888), (16, 1311284), (26, 806944), (32, 655642), (52, 403472), (64, 327821), (104, 201736), (151, 138944), (167, 125632), (208, 100868), (302, 69472), (334, 62816), (416, 50434), (604, 34736), (668, 31408), (832, 25217), (1208, 17368), (1336, 15704), (1963, 10688), (2171, 9664), (2416, 8684), (2672, 7852), (3926, 5344), (4342, 4832)]