81898976.000000000

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 298598400

約数和(自身を除く): 170867240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 239, 248, 310, 431, 478, 620, 862, 956, 1195, 1240, 1724, 1912, 2155, 2390, 3448, 4310, 4780, 7409, 8620, 9560, 13361, 14818, 17240, 26722, 29636, 37045, 53444, 59272, 66805, 74090, 103009, 106888, 133610, 148180, 206018, 267220, 296360, 412036, 515045, 534440, 824072, 1030090, 2060180, 3193279, 4120360, 6386558, 12773116, 15966395, 25546232, 31932790, 63865580, 127731160]

約数ペア:

[(1, 127731160), (2, 63865580), (4, 31932790), (5, 25546232), (8, 15966395), (10, 12773116), (20, 6386558), (31, 4120360), (40, 3193279), (62, 2060180), (124, 1030090), (155, 824072), (239, 534440), (248, 515045), (310, 412036), (431, 296360), (478, 267220), (620, 206018), (862, 148180), (956, 133610), (1195, 106888), (1240, 103009), (1724, 74090), (1912, 66805), (2155, 59272), (2390, 53444), (3448, 37045), (4310, 29636), (4780, 26722), (7409, 17240), (8620, 14818), (9560, 13361)]