21163440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{809}}^1$

素因数の和:934

約数の個数: 80

約数和(自身を含む): 66290400

約数和(自身を除く): 45126960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 109, 120, 218, 240, 327, 436, 545, 654, 809, 872, 1090, 1308, 1618, 1635, 1744, 2180, 2427, 2616, 3236, 3270, 4045, 4360, 4854, 5232, 6472, 6540, 8090, 8720, 9708, 12135, 12944, 13080, 16180, 19416, 24270, 26160, 32360, 38832, 48540, 64720, 88181, 97080, 176362, 194160, 264543, 352724, 440905, 529086, 705448, 881810, 1058172, 1322715, 1410896, 1763620, 2116344, 2645430, 3527240, 4232688, 5290860, 7054480, 10581720, 21163440]

約数ペア:

[(1, 21163440), (2, 10581720), (3, 7054480), (4, 5290860), (5, 4232688), (6, 3527240), (8, 2645430), (10, 2116344), (12, 1763620), (15, 1410896), (16, 1322715), (20, 1058172), (24, 881810), (30, 705448), (40, 529086), (48, 440905), (60, 352724), (80, 264543), (109, 194160), (120, 176362), (218, 97080), (240, 88181), (327, 64720), (436, 48540), (545, 38832), (654, 32360), (809, 26160), (872, 24270), (1090, 19416), (1308, 16180), (1618, 13080), (1635, 12944), (1744, 12135), (2180, 9708), (2427, 8720), (2616, 8090), (3236, 6540), (3270, 6472), (4045, 5232), (4360, 4854)]