21130170

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{419}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 52103520

約数和(自身を除く): 30973350

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 41, 82, 123, 205, 246, 410, 419, 615, 838, 1230, 1257, 1681, 2095, 2514, 3362, 4190, 5043, 6285, 8405, 10086, 12570, 16810, 17179, 25215, 34358, 50430, 51537, 85895, 103074, 171790, 257685, 515370, 704339, 1408678, 2113017, 3521695, 4226034, 7043390, 10565085, 21130170]

約数ペア:

[(1, 21130170), (2, 10565085), (3, 7043390), (5, 4226034), (6, 3521695), (10, 2113017), (15, 1408678), (30, 704339), (41, 515370), (82, 257685), (123, 171790), (205, 103074), (246, 85895), (410, 51537), (419, 50430), (615, 34358), (838, 25215), (1230, 17179), (1257, 16810), (1681, 12570), (2095, 10086), (2514, 8405), (3362, 6285), (4190, 5043)]