20199995445

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{206639}}^1$

素因数の和:206687

約数の個数: 64

約数和(自身を含む): 39674880000

約数和(自身を除く): 19474884555

約数列:

[1, 3, 5, 7, 15, 19, 21, 35, 49, 57, 95, 105, 133, 147, 245, 285, 343, 399, 665, 735, 931, 1029, 1715, 1995, 2793, 4655, 5145, 6517, 13965, 19551, 32585, 97755, 206639, 619917, 1033195, 1446473, 3099585, 3926141, 4339419, 7232365, 10125311, 11778423, 19630705, 21697095, 27482987, 30375933, 50626555, 58892115, 70877177, 82448961, 137414935, 151879665, 192380909, 212631531, 354385885, 412244805, 577142727, 961904545, 1063157655, 1346666363, 2885713635, 4039999089, 6733331815, 20199995445]

約数ペア:

[(1, 20199995445), (3, 6733331815), (5, 4039999089), (7, 2885713635), (15, 1346666363), (19, 1063157655), (21, 961904545), (35, 577142727), (49, 412244805), (57, 354385885), (95, 212631531), (105, 192380909), (133, 151879665), (147, 137414935), (245, 82448961), (285, 70877177), (343, 58892115), (399, 50626555), (665, 30375933), (735, 27482987), (931, 21697095), (1029, 19630705), (1715, 11778423), (1995, 10125311), (2793, 7232365), (4655, 4339419), (5145, 3926141), (6517, 3099585), (13965, 1446473), (19551, 1033195), (32585, 619917), (97755, 206639)]