128420505

素因数分解:

$3^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 235710720

約数和(自身を除く): 107290215

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 83, 135, 157, 219, 249, 365, 415, 471, 657, 747, 785, 1095, 1245, 1413, 1971, 2241, 2355, 3285, 3735, 4239, 6059, 7065, 9855, 11205, 11461, 13031, 18177, 21195, 30295, 34383, 39093, 54531, 57305, 65155, 90885, 103149, 117279, 163593, 171915, 195465, 272655, 309447, 351837, 515745, 586395, 817965, 951263, 1547235, 1759185, 2853789, 4756315, 8561367, 14268945, 25684101, 42806835, 128420505]

約数ペア:

[(1, 128420505), (3, 42806835), (5, 25684101), (9, 14268945), (15, 8561367), (27, 4756315), (45, 2853789), (73, 1759185), (83, 1547235), (135, 951263), (157, 817965), (219, 586395), (249, 515745), (365, 351837), (415, 309447), (471, 272655), (657, 195465), (747, 171915), (785, 163593), (1095, 117279), (1245, 103149), (1413, 90885), (1971, 65155), (2241, 57305), (2355, 54531), (3285, 39093), (3735, 34383), (4239, 30295), (6059, 21195), (7065, 18177), (9855, 13031), (11205, 11461)]