20127680

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2029}}^1$

素因数の和:2077

約数の個数: 56

約数和(自身を含む): 49499520

約数和(自身を除く): 29371840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2029, 2480, 4058, 4960, 8116, 9920, 10145, 16232, 20290, 32464, 40580, 62899, 64928, 81160, 125798, 129856, 162320, 251596, 314495, 324640, 503192, 628990, 649280, 1006384, 1257980, 2012768, 2515960, 4025536, 5031920, 10063840, 20127680]

約数ペア:

[(1, 20127680), (2, 10063840), (4, 5031920), (5, 4025536), (8, 2515960), (10, 2012768), (16, 1257980), (20, 1006384), (31, 649280), (32, 628990), (40, 503192), (62, 324640), (64, 314495), (80, 251596), (124, 162320), (155, 129856), (160, 125798), (248, 81160), (310, 64928), (320, 62899), (496, 40580), (620, 32464), (992, 20290), (1240, 16232), (1984, 10145), (2029, 9920), (2480, 8116), (4058, 4960)]