9780756475

素因数分解:

$5^2\times 7^3\times {\mathrm{53}}^1\times {\mathrm{21521}}^1$

素因数の和:21605

約数の個数: 48

約数和(自身を含む): 14411131200

約数和(自身を除く): 4630374725

約数列:

[1, 5, 7, 25, 35, 49, 53, 175, 245, 265, 343, 371, 1225, 1325, 1715, 1855, 2597, 8575, 9275, 12985, 18179, 21521, 64925, 90895, 107605, 150647, 454475, 538025, 753235, 1054529, 1140613, 3766175, 5272645, 5703065, 7381703, 7984291, 26363225, 28515325, 36908515, 39921455, 55890037, 184542575, 199607275, 279450185, 391230259, 1397250925, 1956151295, 9780756475]

約数ペア:

[(1, 9780756475), (5, 1956151295), (7, 1397250925), (25, 391230259), (35, 279450185), (49, 199607275), (53, 184542575), (175, 55890037), (245, 39921455), (265, 36908515), (343, 28515325), (371, 26363225), (1225, 7984291), (1325, 7381703), (1715, 5703065), (1855, 5272645), (2597, 3766175), (8575, 1140613), (9275, 1054529), (12985, 753235), (18179, 538025), (21521, 454475), (64925, 150647), (90895, 107605)]