1889420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{43}}^1$

素因数の和:91

約数の個数: 48

約数和(自身を含む): 4398240

約数和(自身を除く): 2508820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 169, 172, 215, 260, 338, 430, 559, 676, 845, 860, 1118, 1690, 2197, 2236, 2795, 3380, 4394, 5590, 7267, 8788, 10985, 11180, 14534, 21970, 29068, 36335, 43940, 72670, 94471, 145340, 188942, 377884, 472355, 944710, 1889420]

約数ペア:

[(1, 1889420), (2, 944710), (4, 472355), (5, 377884), (10, 188942), (13, 145340), (20, 94471), (26, 72670), (43, 43940), (52, 36335), (65, 29068), (86, 21970), (130, 14534), (169, 11180), (172, 10985), (215, 8788), (260, 7267), (338, 5590), (430, 4394), (559, 3380), (676, 2795), (845, 2236), (860, 2197), (1118, 1690)]