21417780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1327}}^1$

素因数の和:1608

約数の個数: 48

約数和(自身を含む): 60238080

約数和(自身を除く): 38820300

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 269, 538, 807, 1076, 1327, 1345, 1614, 2654, 2690, 3228, 3981, 4035, 5308, 5380, 6635, 7962, 8070, 13270, 15924, 16140, 19905, 26540, 39810, 79620, 356963, 713926, 1070889, 1427852, 1784815, 2141778, 3569630, 4283556, 5354445, 7139260, 10708890, 21417780]

約数ペア:

[(1, 21417780), (2, 10708890), (3, 7139260), (4, 5354445), (5, 4283556), (6, 3569630), (10, 2141778), (12, 1784815), (15, 1427852), (20, 1070889), (30, 713926), (60, 356963), (269, 79620), (538, 39810), (807, 26540), (1076, 19905), (1327, 16140), (1345, 15924), (1614, 13270), (2654, 8070), (2690, 7962), (3228, 6635), (3981, 5380), (4035, 5308)]