398901471680

素因数分解:

$2^6\times 5^1\times {\mathrm{3181}}^1\times {\mathrm{391879}}^1$

素因数の和:395077

約数の個数: 56

約数和(自身を含む): 950185165920

約数和(自身を除く): 551283694240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 3181, 6362, 12724, 15905, 25448, 31810, 50896, 63620, 101792, 127240, 203584, 254480, 391879, 508960, 783758, 1017920, 1567516, 1959395, 3135032, 3918790, 6270064, 7837580, 12540128, 15675160, 25080256, 31350320, 62700640, 125401280, 1246567099, 2493134198, 4986268396, 6232835495, 9972536792, 12465670990, 19945073584, 24931341980, 39890147168, 49862683960, 79780294336, 99725367920, 199450735840, 398901471680]

約数ペア:

[(1, 398901471680), (2, 199450735840), (4, 99725367920), (5, 79780294336), (8, 49862683960), (10, 39890147168), (16, 24931341980), (20, 19945073584), (32, 12465670990), (40, 9972536792), (64, 6232835495), (80, 4986268396), (160, 2493134198), (320, 1246567099), (3181, 125401280), (6362, 62700640), (12724, 31350320), (15905, 25080256), (25448, 15675160), (31810, 12540128), (50896, 7837580), (63620, 6270064), (101792, 3918790), (127240, 3135032), (203584, 1959395), (254480, 1567516), (391879, 1017920), (508960, 783758)]