20135920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{877}}^1$

素因数の和:938

約数の個数: 80

約数和(自身を含む): 54871488

約数和(自身を除く): 34735568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 877, 1148, 1435, 1640, 1754, 2296, 2870, 3280, 3508, 4385, 4592, 5740, 6139, 7016, 8770, 11480, 12278, 14032, 17540, 22960, 24556, 30695, 35080, 35957, 49112, 61390, 70160, 71914, 98224, 122780, 143828, 179785, 245560, 251699, 287656, 359570, 491120, 503398, 575312, 719140, 1006796, 1258495, 1438280, 2013592, 2516990, 2876560, 4027184, 5033980, 10067960, 20135920]

約数ペア:

[(1, 20135920), (2, 10067960), (4, 5033980), (5, 4027184), (7, 2876560), (8, 2516990), (10, 2013592), (14, 1438280), (16, 1258495), (20, 1006796), (28, 719140), (35, 575312), (40, 503398), (41, 491120), (56, 359570), (70, 287656), (80, 251699), (82, 245560), (112, 179785), (140, 143828), (164, 122780), (205, 98224), (280, 71914), (287, 70160), (328, 61390), (410, 49112), (560, 35957), (574, 35080), (656, 30695), (820, 24556), (877, 22960), (1148, 17540), (1435, 14032), (1640, 12278), (1754, 11480), (2296, 8770), (2870, 7016), (3280, 6139), (3508, 5740), (4385, 4592)]