21355060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{587}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 48009024

約数和(自身を除く): 26653964

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 107, 170, 214, 340, 428, 535, 587, 1070, 1174, 1819, 2140, 2348, 2935, 3638, 5870, 7276, 9095, 9979, 11740, 18190, 19958, 36380, 39916, 49895, 62809, 99790, 125618, 199580, 251236, 314045, 628090, 1067753, 1256180, 2135506, 4271012, 5338765, 10677530, 21355060]

約数ペア:

[(1, 21355060), (2, 10677530), (4, 5338765), (5, 4271012), (10, 2135506), (17, 1256180), (20, 1067753), (34, 628090), (68, 314045), (85, 251236), (107, 199580), (170, 125618), (214, 99790), (340, 62809), (428, 49895), (535, 39916), (587, 36380), (1070, 19958), (1174, 18190), (1819, 11740), (2140, 9979), (2348, 9095), (2935, 7276), (3638, 5870)]