21678840

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6691}}^1$

素因数の和:6714

約数の個数: 80

約数和(自身を含む): 72875880

約数和(自身を除く): 51197040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6691, 13382, 20073, 26764, 33455, 40146, 53528, 60219, 66910, 80292, 100365, 120438, 133820, 160584, 180657, 200730, 240876, 267640, 301095, 361314, 401460, 481752, 541971, 602190, 722628, 802920, 903285, 1083942, 1204380, 1445256, 1806570, 2167884, 2408760, 2709855, 3613140, 4335768, 5419710, 7226280, 10839420, 21678840]

約数ペア:

[(1, 21678840), (2, 10839420), (3, 7226280), (4, 5419710), (5, 4335768), (6, 3613140), (8, 2709855), (9, 2408760), (10, 2167884), (12, 1806570), (15, 1445256), (18, 1204380), (20, 1083942), (24, 903285), (27, 802920), (30, 722628), (36, 602190), (40, 541971), (45, 481752), (54, 401460), (60, 361314), (72, 301095), (81, 267640), (90, 240876), (108, 200730), (120, 180657), (135, 160584), (162, 133820), (180, 120438), (216, 100365), (270, 80292), (324, 66910), (360, 60219), (405, 53528), (540, 40146), (648, 33455), (810, 26764), (1080, 20073), (1620, 13382), (3240, 6691)]