189898988

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 349985664

約数和(自身を除く): 160086676

約数列:

[1, 2, 4, 47, 73, 94, 101, 137, 146, 188, 202, 274, 292, 404, 548, 3431, 4747, 6439, 6862, 7373, 9494, 10001, 12878, 13724, 13837, 14746, 18988, 20002, 25756, 27674, 29492, 40004, 55348, 346531, 470047, 650339, 693062, 940094, 1010101, 1300678, 1386124, 1880188, 2020202, 2601356, 4040404, 47474747, 94949494, 189898988]

約数ペア:

[(1, 189898988), (2, 94949494), (4, 47474747), (47, 4040404), (73, 2601356), (94, 2020202), (101, 1880188), (137, 1386124), (146, 1300678), (188, 1010101), (202, 940094), (274, 693062), (292, 650339), (404, 470047), (548, 346531), (3431, 55348), (4747, 40004), (6439, 29492), (6862, 27674), (7373, 25756), (9494, 20002), (10001, 18988), (12878, 14746), (13724, 13837)]