21357920

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4603}}^1$

素因数の和:4647

約数の個数: 48

約数和(自身を含む): 52209360

約数和(自身を除く): 30851440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4603, 4640, 9206, 18412, 23015, 36824, 46030, 73648, 92060, 133487, 147296, 184120, 266974, 368240, 533948, 667435, 736480, 1067896, 1334870, 2135792, 2669740, 4271584, 5339480, 10678960, 21357920]

約数ペア:

[(1, 21357920), (2, 10678960), (4, 5339480), (5, 4271584), (8, 2669740), (10, 2135792), (16, 1334870), (20, 1067896), (29, 736480), (32, 667435), (40, 533948), (58, 368240), (80, 266974), (116, 184120), (145, 147296), (160, 133487), (232, 92060), (290, 73648), (464, 46030), (580, 36824), (928, 23015), (1160, 18412), (2320, 9206), (4603, 4640)]