20419390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{331}}^1$

素因数の和:568

約数の個数: 32

約数和(自身を含む): 38246400

約数和(自身を除く): 17827010

約数列:

[1, 2, 5, 10, 31, 62, 155, 199, 310, 331, 398, 662, 995, 1655, 1990, 3310, 6169, 10261, 12338, 20522, 30845, 51305, 61690, 65869, 102610, 131738, 329345, 658690, 2041939, 4083878, 10209695, 20419390]

約数ペア:

[(1, 20419390), (2, 10209695), (5, 4083878), (10, 2041939), (31, 658690), (62, 329345), (155, 131738), (199, 102610), (310, 65869), (331, 61690), (398, 51305), (662, 30845), (995, 20522), (1655, 12338), (1990, 10261), (3310, 6169)]