31528315

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 49986720

約数和(自身を除く): 18458405

約数列:

[1, 5, 7, 13, 19, 35, 49, 65, 91, 95, 133, 245, 247, 455, 521, 637, 665, 931, 1235, 1729, 2605, 3185, 3647, 4655, 6773, 8645, 9899, 12103, 18235, 25529, 33865, 47411, 49495, 60515, 69293, 127645, 128687, 237055, 331877, 346465, 485051, 643435, 900809, 1659385, 2425255, 4504045, 6305663, 31528315]

約数ペア:

[(1, 31528315), (5, 6305663), (7, 4504045), (13, 2425255), (19, 1659385), (35, 900809), (49, 643435), (65, 485051), (91, 346465), (95, 331877), (133, 237055), (245, 128687), (247, 127645), (455, 69293), (521, 60515), (637, 49495), (665, 47411), (931, 33865), (1235, 25529), (1729, 18235), (2605, 12103), (3185, 9899), (3647, 8645), (4655, 6773)]