6400420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 14676480

約数和(自身を除く): 8276060

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 103, 130, 206, 239, 260, 412, 478, 515, 956, 1030, 1195, 1339, 2060, 2390, 2678, 3107, 4780, 5356, 6214, 6695, 12428, 13390, 15535, 24617, 26780, 31070, 49234, 62140, 98468, 123085, 246170, 320021, 492340, 640042, 1280084, 1600105, 3200210, 6400420]

約数ペア:

[(1, 6400420), (2, 3200210), (4, 1600105), (5, 1280084), (10, 640042), (13, 492340), (20, 320021), (26, 246170), (52, 123085), (65, 98468), (103, 62140), (130, 49234), (206, 31070), (239, 26780), (260, 24617), (412, 15535), (478, 13390), (515, 12428), (956, 6695), (1030, 6214), (1195, 5356), (1339, 4780), (2060, 3107), (2390, 2678)]