21488580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3851}}^1$

素因数の和:3897

約数の個数: 72

約数和(自身を含む): 67302144

約数和(自身を除く): 45813564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3851, 5580, 7702, 11553, 15404, 19255, 23106, 34659, 38510, 46212, 57765, 69318, 77020, 115530, 119381, 138636, 173295, 231060, 238762, 346590, 358143, 477524, 596905, 693180, 716286, 1074429, 1193810, 1432572, 1790715, 2148858, 2387620, 3581430, 4297716, 5372145, 7162860, 10744290, 21488580]

約数ペア:

[(1, 21488580), (2, 10744290), (3, 7162860), (4, 5372145), (5, 4297716), (6, 3581430), (9, 2387620), (10, 2148858), (12, 1790715), (15, 1432572), (18, 1193810), (20, 1074429), (30, 716286), (31, 693180), (36, 596905), (45, 477524), (60, 358143), (62, 346590), (90, 238762), (93, 231060), (124, 173295), (155, 138636), (180, 119381), (186, 115530), (279, 77020), (310, 69318), (372, 57765), (465, 46212), (558, 38510), (620, 34659), (930, 23106), (1116, 19255), (1395, 15404), (1860, 11553), (2790, 7702), (3851, 5580)]