20483980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5477}}^1$

素因数の和:5514

約数の個数: 48

約数和(自身を含む): 49696416

約数和(自身を除く): 29212436

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 935, 1870, 3740, 5477, 10954, 21908, 27385, 54770, 60247, 93109, 109540, 120494, 186218, 240988, 301235, 372436, 465545, 602470, 931090, 1024199, 1204940, 1862180, 2048398, 4096796, 5120995, 10241990, 20483980]

約数ペア:

[(1, 20483980), (2, 10241990), (4, 5120995), (5, 4096796), (10, 2048398), (11, 1862180), (17, 1204940), (20, 1024199), (22, 931090), (34, 602470), (44, 465545), (55, 372436), (68, 301235), (85, 240988), (110, 186218), (170, 120494), (187, 109540), (220, 93109), (340, 60247), (374, 54770), (748, 27385), (935, 21908), (1870, 10954), (3740, 5477)]