81719135920

素因数分解:

$2^4\times 5^1\times {\mathrm{15331}}^1\times {\mathrm{66629}}^1$

素因数の和:81973

約数の個数: 40

約数和(自身を含む): 190012235760

約数和(自身を除く): 108293099840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 15331, 30662, 61324, 66629, 76655, 122648, 133258, 153310, 245296, 266516, 306620, 333145, 533032, 613240, 666290, 1066064, 1226480, 1332580, 2665160, 5330320, 1021489199, 2042978398, 4085956796, 5107445995, 8171913592, 10214891990, 16343827184, 20429783980, 40859567960, 81719135920]

約数ペア:

[(1, 81719135920), (2, 40859567960), (4, 20429783980), (5, 16343827184), (8, 10214891990), (10, 8171913592), (16, 5107445995), (20, 4085956796), (40, 2042978398), (80, 1021489199), (15331, 5330320), (30662, 2665160), (61324, 1332580), (66629, 1226480), (76655, 1066064), (122648, 666290), (133258, 613240), (153310, 533032), (245296, 333145), (266516, 306620)]