2139830

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{397}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 4900176

約数和(自身を除く): 2760346

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 49, 55, 70, 77, 98, 110, 154, 245, 385, 397, 490, 539, 770, 794, 1078, 1985, 2695, 2779, 3970, 4367, 5390, 5558, 8734, 13895, 19453, 21835, 27790, 30569, 38906, 43670, 61138, 97265, 152845, 194530, 213983, 305690, 427966, 1069915, 2139830]

約数ペア:

[(1, 2139830), (2, 1069915), (5, 427966), (7, 305690), (10, 213983), (11, 194530), (14, 152845), (22, 97265), (35, 61138), (49, 43670), (55, 38906), (70, 30569), (77, 27790), (98, 21835), (110, 19453), (154, 13895), (245, 8734), (385, 5558), (397, 5390), (490, 4367), (539, 3970), (770, 2779), (794, 2695), (1078, 1985)]