20929720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{4397}}^1$

素因数の和:4432

約数の個数: 64

約数和(自身を含む): 56998080

約数和(自身を除く): 36068360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 119, 136, 140, 170, 238, 280, 340, 476, 595, 680, 952, 1190, 2380, 4397, 4760, 8794, 17588, 21985, 30779, 35176, 43970, 61558, 74749, 87940, 123116, 149498, 153895, 175880, 246232, 298996, 307790, 373745, 523243, 597992, 615580, 747490, 1046486, 1231160, 1494980, 2092972, 2616215, 2989960, 4185944, 5232430, 10464860, 20929720]

約数ペア:

[(1, 20929720), (2, 10464860), (4, 5232430), (5, 4185944), (7, 2989960), (8, 2616215), (10, 2092972), (14, 1494980), (17, 1231160), (20, 1046486), (28, 747490), (34, 615580), (35, 597992), (40, 523243), (56, 373745), (68, 307790), (70, 298996), (85, 246232), (119, 175880), (136, 153895), (140, 149498), (170, 123116), (238, 87940), (280, 74749), (340, 61558), (476, 43970), (595, 35176), (680, 30779), (952, 21985), (1190, 17588), (2380, 8794), (4397, 4760)]