20753705

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:198

約数の個数: 48

約数和(自身を含む): 31518720

約数和(自身を除く): 10765015

約数列:

[1, 5, 7, 23, 29, 35, 49, 115, 127, 145, 161, 203, 245, 635, 667, 805, 889, 1015, 1127, 1421, 2921, 3335, 3683, 4445, 4669, 5635, 6223, 7105, 14605, 18415, 20447, 23345, 25781, 31115, 32683, 84709, 102235, 128905, 143129, 163415, 180467, 423545, 592963, 715645, 902335, 2964815, 4150741, 20753705]

約数ペア:

[(1, 20753705), (5, 4150741), (7, 2964815), (23, 902335), (29, 715645), (35, 592963), (49, 423545), (115, 180467), (127, 163415), (145, 143129), (161, 128905), (203, 102235), (245, 84709), (635, 32683), (667, 31115), (805, 25781), (889, 23345), (1015, 20447), (1127, 18415), (1421, 14605), (2921, 7105), (3335, 6223), (3683, 5635), (4445, 4669)]