399474940

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{461}}^1\times {\mathrm{1171}}^1$

素因数の和:1678

約数の個数: 48

約数和(自身を含む): 864176544

約数和(自身を除く): 464701604

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 461, 740, 922, 1171, 1844, 2305, 2342, 4610, 4684, 5855, 9220, 11710, 17057, 23420, 34114, 43327, 68228, 85285, 86654, 170570, 173308, 216635, 341140, 433270, 539831, 866540, 1079662, 2159324, 2699155, 5398310, 10796620, 19973747, 39947494, 79894988, 99868735, 199737470, 399474940]

約数ペア:

[(1, 399474940), (2, 199737470), (4, 99868735), (5, 79894988), (10, 39947494), (20, 19973747), (37, 10796620), (74, 5398310), (148, 2699155), (185, 2159324), (370, 1079662), (461, 866540), (740, 539831), (922, 433270), (1171, 341140), (1844, 216635), (2305, 173308), (2342, 170570), (4610, 86654), (4684, 85285), (5855, 68228), (9220, 43327), (11710, 34114), (17057, 23420)]