16915480

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 39657600

約数和(自身を除く): 22742120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 79, 101, 106, 158, 202, 212, 265, 316, 395, 404, 424, 505, 530, 632, 790, 808, 1010, 1060, 1580, 2020, 2120, 3160, 4040, 4187, 5353, 7979, 8374, 10706, 15958, 16748, 20935, 21412, 26765, 31916, 33496, 39895, 41870, 42824, 53530, 63832, 79790, 83740, 107060, 159580, 167480, 214120, 319160, 422887, 845774, 1691548, 2114435, 3383096, 4228870, 8457740, 16915480]

約数ペア:

[(1, 16915480), (2, 8457740), (4, 4228870), (5, 3383096), (8, 2114435), (10, 1691548), (20, 845774), (40, 422887), (53, 319160), (79, 214120), (101, 167480), (106, 159580), (158, 107060), (202, 83740), (212, 79790), (265, 63832), (316, 53530), (395, 42824), (404, 41870), (424, 39895), (505, 33496), (530, 31916), (632, 26765), (790, 21412), (808, 20935), (1010, 16748), (1060, 15958), (1580, 10706), (2020, 8374), (2120, 7979), (3160, 5353), (4040, 4187)]