20077956880

素因数分解:

$2^4\times 5^1\times {\mathrm{331}}^1\times {\mathrm{758231}}^1$

素因数の和:758575

約数の個数: 40

約数和(自身を含む): 46822342464

約数和(自身を除く): 26744385584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 331, 662, 1324, 1655, 2648, 3310, 5296, 6620, 13240, 26480, 758231, 1516462, 3032924, 3791155, 6065848, 7582310, 12131696, 15164620, 30329240, 60658480, 250974461, 501948922, 1003897844, 1254872305, 2007795688, 2509744610, 4015591376, 5019489220, 10038978440, 20077956880]

約数ペア:

[(1, 20077956880), (2, 10038978440), (4, 5019489220), (5, 4015591376), (8, 2509744610), (10, 2007795688), (16, 1254872305), (20, 1003897844), (40, 501948922), (80, 250974461), (331, 60658480), (662, 30329240), (1324, 15164620), (1655, 12131696), (2648, 7582310), (3310, 6065848), (5296, 3791155), (6620, 3032924), (13240, 1516462), (26480, 758231)]