405545920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{7499}}^1$

素因数の和:7542

約数の個数: 84

約数和(自身を含む): 1045845000

約数和(自身を除く): 640299080

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 169, 208, 260, 320, 338, 416, 520, 676, 832, 845, 1040, 1352, 1690, 2080, 2704, 3380, 4160, 5408, 6760, 7499, 10816, 13520, 14998, 27040, 29996, 37495, 54080, 59992, 74990, 97487, 119984, 149980, 194974, 239968, 299960, 389948, 479936, 487435, 599920, 779896, 974870, 1199840, 1267331, 1559792, 1949740, 2399680, 2534662, 3119584, 3899480, 5069324, 6239168, 6336655, 7798960, 10138648, 12673310, 15597920, 20277296, 25346620, 31195840, 40554592, 50693240, 81109184, 101386480, 202772960, 405545920]

約数ペア:

[(1, 405545920), (2, 202772960), (4, 101386480), (5, 81109184), (8, 50693240), (10, 40554592), (13, 31195840), (16, 25346620), (20, 20277296), (26, 15597920), (32, 12673310), (40, 10138648), (52, 7798960), (64, 6336655), (65, 6239168), (80, 5069324), (104, 3899480), (130, 3119584), (160, 2534662), (169, 2399680), (208, 1949740), (260, 1559792), (320, 1267331), (338, 1199840), (416, 974870), (520, 779896), (676, 599920), (832, 487435), (845, 479936), (1040, 389948), (1352, 299960), (1690, 239968), (2080, 194974), (2704, 149980), (3380, 119984), (4160, 97487), (5408, 74990), (6760, 59992), (7499, 54080), (10816, 37495), (13520, 29996), (14998, 27040)]