31427320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{19163}}^1$

素因数の和:19215

約数の個数: 32

約数和(自身を含む): 72439920

約数和(自身を除く): 41012600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 19163, 38326, 76652, 95815, 153304, 191630, 383260, 766520, 785683, 1571366, 3142732, 3928415, 6285464, 7856830, 15713660, 31427320]

約数ペア:

[(1, 31427320), (2, 15713660), (4, 7856830), (5, 6285464), (8, 3928415), (10, 3142732), (20, 1571366), (40, 785683), (41, 766520), (82, 383260), (164, 191630), (205, 153304), (328, 95815), (410, 76652), (820, 38326), (1640, 19163)]