21505476

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 53464320

約数和(自身を除く): 31958844

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 271, 389, 542, 778, 813, 1084, 1167, 1556, 1626, 2334, 3252, 4607, 4668, 6613, 9214, 13226, 13821, 18428, 19839, 26452, 27642, 39678, 55284, 79356, 105419, 210838, 316257, 421676, 632514, 1265028, 1792123, 3584246, 5376369, 7168492, 10752738, 21505476]

約数ペア:

[(1, 21505476), (2, 10752738), (3, 7168492), (4, 5376369), (6, 3584246), (12, 1792123), (17, 1265028), (34, 632514), (51, 421676), (68, 316257), (102, 210838), (204, 105419), (271, 79356), (389, 55284), (542, 39678), (778, 27642), (813, 26452), (1084, 19839), (1167, 18428), (1556, 13821), (1626, 13226), (2334, 9214), (3252, 6613), (4607, 4668)]