12431380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{349}}^1$

素因数の和:508

約数の個数: 48

約数和(自身を含む): 28400400

約数和(自身を除く): 15969020

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 349, 548, 685, 698, 1370, 1396, 1745, 1781, 2740, 3490, 3562, 4537, 6980, 7124, 8905, 9074, 17810, 18148, 22685, 35620, 45370, 47813, 90740, 95626, 191252, 239065, 478130, 621569, 956260, 1243138, 2486276, 3107845, 6215690, 12431380]

約数ペア:

[(1, 12431380), (2, 6215690), (4, 3107845), (5, 2486276), (10, 1243138), (13, 956260), (20, 621569), (26, 478130), (52, 239065), (65, 191252), (130, 95626), (137, 90740), (260, 47813), (274, 45370), (349, 35620), (548, 22685), (685, 18148), (698, 17810), (1370, 9074), (1396, 8905), (1745, 7124), (1781, 6980), (2740, 4537), (3490, 3562)]