20687300

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:357

約数の個数: 72

約数和(自身を含む): 48809376

約数和(自身を除く): 28122076

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 43, 50, 68, 85, 86, 100, 170, 172, 215, 283, 340, 425, 430, 566, 731, 850, 860, 1075, 1132, 1415, 1462, 1700, 2150, 2830, 2924, 3655, 4300, 4811, 5660, 7075, 7310, 9622, 12169, 14150, 14620, 18275, 19244, 24055, 24338, 28300, 36550, 48110, 48676, 60845, 73100, 96220, 120275, 121690, 206873, 240550, 243380, 304225, 413746, 481100, 608450, 827492, 1034365, 1216900, 2068730, 4137460, 5171825, 10343650, 20687300]

約数ペア:

[(1, 20687300), (2, 10343650), (4, 5171825), (5, 4137460), (10, 2068730), (17, 1216900), (20, 1034365), (25, 827492), (34, 608450), (43, 481100), (50, 413746), (68, 304225), (85, 243380), (86, 240550), (100, 206873), (170, 121690), (172, 120275), (215, 96220), (283, 73100), (340, 60845), (425, 48676), (430, 48110), (566, 36550), (731, 28300), (850, 24338), (860, 24055), (1075, 19244), (1132, 18275), (1415, 14620), (1462, 14150), (1700, 12169), (2150, 9622), (2830, 7310), (2924, 7075), (3655, 5660), (4300, 4811)]