87802990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1057

約数の個数: 64

約数和(自身を含む): 185898240

約数和(自身を除く): 98095250

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 43, 55, 86, 95, 110, 190, 209, 215, 418, 430, 473, 817, 946, 977, 1045, 1634, 1954, 2090, 2365, 4085, 4730, 4885, 8170, 8987, 9770, 10747, 17974, 18563, 21494, 37126, 42011, 44935, 53735, 84022, 89870, 92815, 107470, 185630, 204193, 210055, 408386, 420110, 462121, 798209, 924242, 1020965, 1596418, 2041930, 2310605, 3991045, 4621210, 7982090, 8780299, 17560598, 43901495, 87802990]

約数ペア:

[(1, 87802990), (2, 43901495), (5, 17560598), (10, 8780299), (11, 7982090), (19, 4621210), (22, 3991045), (38, 2310605), (43, 2041930), (55, 1596418), (86, 1020965), (95, 924242), (110, 798209), (190, 462121), (209, 420110), (215, 408386), (418, 210055), (430, 204193), (473, 185630), (817, 107470), (946, 92815), (977, 89870), (1045, 84022), (1634, 53735), (1954, 44935), (2090, 42011), (2365, 37126), (4085, 21494), (4730, 18563), (4885, 17974), (8170, 10747), (8987, 9770)]