209877440

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{21157}}^1$

素因数の和:21205

約数の個数: 56

約数和(自身を含む): 515916672

約数和(自身を除く): 306039232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 21157, 42314, 84628, 105785, 169256, 211570, 338512, 423140, 655867, 677024, 846280, 1311734, 1354048, 1692560, 2623468, 3279335, 3385120, 5246936, 6558670, 6770240, 10493872, 13117340, 20987744, 26234680, 41975488, 52469360, 104938720, 209877440]

約数ペア:

[(1, 209877440), (2, 104938720), (4, 52469360), (5, 41975488), (8, 26234680), (10, 20987744), (16, 13117340), (20, 10493872), (31, 6770240), (32, 6558670), (40, 5246936), (62, 3385120), (64, 3279335), (80, 2623468), (124, 1692560), (155, 1354048), (160, 1311734), (248, 846280), (310, 677024), (320, 655867), (496, 423140), (620, 338512), (992, 211570), (1240, 169256), (1984, 105785), (2480, 84628), (4960, 42314), (9920, 21157)]