21513840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5273}}^1$

素因数の和:5306

約数の個数: 80

約数和(自身を含む): 70629408

約数和(自身を除く): 49115568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5273, 10546, 15819, 21092, 26365, 31638, 42184, 52730, 63276, 79095, 84368, 89641, 105460, 126552, 158190, 179282, 210920, 253104, 268923, 316380, 358564, 421840, 448205, 537846, 632760, 717128, 896410, 1075692, 1265520, 1344615, 1434256, 1792820, 2151384, 2689230, 3585640, 4302768, 5378460, 7171280, 10756920, 21513840]

約数ペア:

[(1, 21513840), (2, 10756920), (3, 7171280), (4, 5378460), (5, 4302768), (6, 3585640), (8, 2689230), (10, 2151384), (12, 1792820), (15, 1434256), (16, 1344615), (17, 1265520), (20, 1075692), (24, 896410), (30, 717128), (34, 632760), (40, 537846), (48, 448205), (51, 421840), (60, 358564), (68, 316380), (80, 268923), (85, 253104), (102, 210920), (120, 179282), (136, 158190), (170, 126552), (204, 105460), (240, 89641), (255, 84368), (272, 79095), (340, 63276), (408, 52730), (510, 42184), (680, 31638), (816, 26365), (1020, 21092), (1360, 15819), (2040, 10546), (4080, 5273)]