648590985

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{21227}}^1$

素因数の和:21342

約数の個数: 48

約数和(自身を含む): 1298134656

約数和(自身を除く): 649543671

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 97, 105, 291, 315, 485, 679, 873, 1455, 2037, 3395, 4365, 6111, 10185, 21227, 30555, 63681, 106135, 148589, 191043, 318405, 445767, 742945, 955215, 1337301, 2059019, 2228835, 6177057, 6686505, 10295095, 14413133, 18531171, 30885285, 43239399, 72065665, 92655855, 129718197, 216196995, 648590985]

約数ペア:

[(1, 648590985), (3, 216196995), (5, 129718197), (7, 92655855), (9, 72065665), (15, 43239399), (21, 30885285), (35, 18531171), (45, 14413133), (63, 10295095), (97, 6686505), (105, 6177057), (291, 2228835), (315, 2059019), (485, 1337301), (679, 955215), (873, 742945), (1455, 445767), (2037, 318405), (3395, 191043), (4365, 148589), (6111, 106135), (10185, 63681), (21227, 30555)]