290680

素因数分解:

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

素因数の和:80

約数の個数: 48

約数和(自身を含む): 724680

約数和(自身を除く): 434000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 169, 172, 215, 260, 338, 344, 430, 520, 559, 676, 845, 860, 1118, 1352, 1690, 1720, 2236, 2795, 3380, 4472, 5590, 6760, 7267, 11180, 14534, 22360, 29068, 36335, 58136, 72670, 145340, 290680]

約数ペア:

[(1, 290680), (2, 145340), (4, 72670), (5, 58136), (8, 36335), (10, 29068), (13, 22360), (20, 14534), (26, 11180), (40, 7267), (43, 6760), (52, 5590), (65, 4472), (86, 3380), (104, 2795), (130, 2236), (169, 1720), (172, 1690), (215, 1352), (260, 1118), (338, 860), (344, 845), (430, 676), (520, 559)]