20557610

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{503}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 38247552

約数和(自身を除く): 17689942

約数列:

[1, 2, 5, 10, 61, 67, 122, 134, 305, 335, 503, 610, 670, 1006, 2515, 4087, 5030, 8174, 20435, 30683, 33701, 40870, 61366, 67402, 153415, 168505, 306830, 337010, 2055761, 4111522, 10278805, 20557610]

約数ペア:

[(1, 20557610), (2, 10278805), (5, 4111522), (10, 2055761), (61, 337010), (67, 306830), (122, 168505), (134, 153415), (305, 67402), (335, 61366), (503, 40870), (610, 33701), (670, 30683), (1006, 20435), (2515, 8174), (4087, 5030)]