622640

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1$

素因数の和:237

約数の個数: 40

約数和(自身を含む): 1489488

約数和(自身を除く): 866848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 181, 215, 344, 362, 430, 688, 724, 860, 905, 1448, 1720, 1810, 2896, 3440, 3620, 7240, 7783, 14480, 15566, 31132, 38915, 62264, 77830, 124528, 155660, 311320, 622640]

約数ペア:

[(1, 622640), (2, 311320), (4, 155660), (5, 124528), (8, 77830), (10, 62264), (16, 38915), (20, 31132), (40, 15566), (43, 14480), (80, 7783), (86, 7240), (172, 3620), (181, 3440), (215, 2896), (344, 1810), (362, 1720), (430, 1448), (688, 905), (724, 860)]