19218680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2843}}^1$

素因数の和:2880

約数の個数: 48

約数和(自身を含む): 46840680

約数和(自身を除く): 27622000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 2843, 3380, 5686, 6760, 11372, 14215, 22744, 28430, 36959, 56860, 73918, 113720, 147836, 184795, 295672, 369590, 480467, 739180, 960934, 1478360, 1921868, 2402335, 3843736, 4804670, 9609340, 19218680]

約数ペア:

[(1, 19218680), (2, 9609340), (4, 4804670), (5, 3843736), (8, 2402335), (10, 1921868), (13, 1478360), (20, 960934), (26, 739180), (40, 480467), (52, 369590), (65, 295672), (104, 184795), (130, 147836), (169, 113720), (260, 73918), (338, 56860), (520, 36959), (676, 28430), (845, 22744), (1352, 14215), (1690, 11372), (2843, 6760), (3380, 5686)]