82008020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{349}}^1\times {\mathrm{379}}^1$

素因数の和:768

約数の個数: 48

約数和(自身を含む): 178752000

約数和(自身を除く): 96743980

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 349, 379, 620, 698, 758, 1396, 1516, 1745, 1895, 3490, 3790, 6980, 7580, 10819, 11749, 21638, 23498, 43276, 46996, 54095, 58745, 108190, 117490, 132271, 216380, 234980, 264542, 529084, 661355, 1322710, 2645420, 4100401, 8200802, 16401604, 20502005, 41004010, 82008020]

約数ペア:

[(1, 82008020), (2, 41004010), (4, 20502005), (5, 16401604), (10, 8200802), (20, 4100401), (31, 2645420), (62, 1322710), (124, 661355), (155, 529084), (310, 264542), (349, 234980), (379, 216380), (620, 132271), (698, 117490), (758, 108190), (1396, 58745), (1516, 54095), (1745, 46996), (1895, 43276), (3490, 23498), (3790, 21638), (6980, 11749), (7580, 10819)]