19749340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5843}}^1$

素因数の和:5878

約数の個数: 36

約数和(自身を含む): 44916984

約数和(自身を除く): 25167644

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5843, 11686, 23372, 29215, 58430, 75959, 116860, 151918, 303836, 379795, 759590, 987467, 1519180, 1974934, 3949868, 4937335, 9874670, 19749340]

約数ペア:

[(1, 19749340), (2, 9874670), (4, 4937335), (5, 3949868), (10, 1974934), (13, 1519180), (20, 987467), (26, 759590), (52, 379795), (65, 303836), (130, 151918), (169, 116860), (260, 75959), (338, 58430), (676, 29215), (845, 23372), (1690, 11686), (3380, 5843)]