400981620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{514079}}^1$

素因数の和:514104

約数の個数: 48

約数和(自身を含む): 1209116160

約数和(自身を除く): 808134540

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 514079, 1028158, 1542237, 2056316, 2570395, 3084474, 5140790, 6168948, 6683027, 7711185, 10281580, 13366054, 15422370, 20049081, 26732108, 30844740, 33415135, 40098162, 66830270, 80196324, 100245405, 133660540, 200490810, 400981620]

約数ペア:

[(1, 400981620), (2, 200490810), (3, 133660540), (4, 100245405), (5, 80196324), (6, 66830270), (10, 40098162), (12, 33415135), (13, 30844740), (15, 26732108), (20, 20049081), (26, 15422370), (30, 13366054), (39, 10281580), (52, 7711185), (60, 6683027), (65, 6168948), (78, 5140790), (130, 3084474), (156, 2570395), (195, 2056316), (260, 1542237), (390, 1028158), (780, 514079)]