31106075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{113}}^1$

素因数の和:165

約数の個数: 72

約数和(自身を含む): 52642464

約数和(自身を除く): 21536389

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 113, 121, 143, 175, 275, 325, 385, 455, 565, 605, 715, 791, 847, 1001, 1243, 1469, 1573, 1925, 2275, 2825, 3025, 3575, 3955, 4235, 5005, 6215, 7345, 7865, 8701, 10283, 11011, 13673, 16159, 19775, 21175, 25025, 31075, 36725, 39325, 43505, 51415, 55055, 68365, 80795, 95711, 113113, 177749, 217525, 257075, 275275, 341825, 403975, 478555, 565565, 888745, 1244243, 2392775, 2827825, 4443725, 6221215, 31106075]

約数ペア:

[(1, 31106075), (5, 6221215), (7, 4443725), (11, 2827825), (13, 2392775), (25, 1244243), (35, 888745), (55, 565565), (65, 478555), (77, 403975), (91, 341825), (113, 275275), (121, 257075), (143, 217525), (175, 177749), (275, 113113), (325, 95711), (385, 80795), (455, 68365), (565, 55055), (605, 51415), (715, 43505), (791, 39325), (847, 36725), (1001, 31075), (1243, 25025), (1469, 21175), (1573, 19775), (1925, 16159), (2275, 13673), (2825, 11011), (3025, 10283), (3575, 8701), (3955, 7865), (4235, 7345), (5005, 6215)]