21079107

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 15312573

約数列:

[1, 3, 7, 9, 21, 53, 59, 63, 107, 159, 177, 321, 371, 413, 477, 531, 749, 963, 1113, 1239, 2247, 3127, 3339, 3717, 5671, 6313, 6741, 9381, 17013, 18939, 21889, 28143, 39697, 44191, 51039, 56817, 65667, 119091, 132573, 197001, 334589, 357273, 397719, 1003767, 2342123, 3011301, 7026369, 21079107]

約数ペア:

[(1, 21079107), (3, 7026369), (7, 3011301), (9, 2342123), (21, 1003767), (53, 397719), (59, 357273), (63, 334589), (107, 197001), (159, 132573), (177, 119091), (321, 65667), (371, 56817), (413, 51039), (477, 44191), (531, 39697), (749, 28143), (963, 21889), (1113, 18939), (1239, 17013), (2247, 9381), (3127, 6741), (3339, 6313), (3717, 5671)]