51491980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{269}}^1\times {\mathrm{563}}^1$

素因数の和:858

約数の個数: 48

約数和(自身を含む): 115123680

約数和(自身を除く): 63631700

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 269, 340, 538, 563, 1076, 1126, 1345, 2252, 2690, 2815, 4573, 5380, 5630, 9146, 9571, 11260, 18292, 19142, 22865, 38284, 45730, 47855, 91460, 95710, 151447, 191420, 302894, 605788, 757235, 1514470, 2574599, 3028940, 5149198, 10298396, 12872995, 25745990, 51491980]

約数ペア:

[(1, 51491980), (2, 25745990), (4, 12872995), (5, 10298396), (10, 5149198), (17, 3028940), (20, 2574599), (34, 1514470), (68, 757235), (85, 605788), (170, 302894), (269, 191420), (340, 151447), (538, 95710), (563, 91460), (1076, 47855), (1126, 45730), (1345, 38284), (2252, 22865), (2690, 19142), (2815, 18292), (4573, 11260), (5380, 9571), (5630, 9146)]