20283760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1249}}^1$

素因数の和:1298

約数の個数: 80

約数和(自身を含む): 55800000

約数和(自身を除く): 35516240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 203, 232, 280, 290, 406, 464, 560, 580, 812, 1015, 1160, 1249, 1624, 2030, 2320, 2498, 3248, 4060, 4996, 6245, 8120, 8743, 9992, 12490, 16240, 17486, 19984, 24980, 34972, 36221, 43715, 49960, 69944, 72442, 87430, 99920, 139888, 144884, 174860, 181105, 253547, 289768, 349720, 362210, 507094, 579536, 699440, 724420, 1014188, 1267735, 1448840, 2028376, 2535470, 2897680, 4056752, 5070940, 10141880, 20283760]

約数ペア:

[(1, 20283760), (2, 10141880), (4, 5070940), (5, 4056752), (7, 2897680), (8, 2535470), (10, 2028376), (14, 1448840), (16, 1267735), (20, 1014188), (28, 724420), (29, 699440), (35, 579536), (40, 507094), (56, 362210), (58, 349720), (70, 289768), (80, 253547), (112, 181105), (116, 174860), (140, 144884), (145, 139888), (203, 99920), (232, 87430), (280, 72442), (290, 69944), (406, 49960), (464, 43715), (560, 36221), (580, 34972), (812, 24980), (1015, 19984), (1160, 17486), (1249, 16240), (1624, 12490), (2030, 9992), (2320, 8743), (2498, 8120), (3248, 6245), (4060, 4996)]