218898420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280639}}^1$

素因数の和:280664

約数の個数: 48

約数和(自身を含む): 660065280

約数和(自身を除く): 441166860

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, 280639, 561278, 841917, 1122556, 1403195, 1683834, 2806390, 3367668, 3648307, 4209585, 5612780, 7296614, 8419170, 10944921, 14593228, 16838340, 18241535, 21889842, 36483070, 43779684, 54724605, 72966140, 109449210, 218898420]

約数ペア:

[(1, 218898420), (2, 109449210), (3, 72966140), (4, 54724605), (5, 43779684), (6, 36483070), (10, 21889842), (12, 18241535), (13, 16838340), (15, 14593228), (20, 10944921), (26, 8419170), (30, 7296614), (39, 5612780), (52, 4209585), (60, 3648307), (65, 3367668), (78, 2806390), (130, 1683834), (156, 1403195), (195, 1122556), (260, 841917), (390, 561278), (780, 280639)]