1556240

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{397}}^1$

素因数の和:424

約数の個数: 60

約数和(自身を含む): 4219596

約数和(自身を除く): 2663356

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 397, 490, 560, 784, 794, 980, 1588, 1960, 1985, 2779, 3176, 3920, 3970, 5558, 6352, 7940, 11116, 13895, 15880, 19453, 22232, 27790, 31760, 38906, 44464, 55580, 77812, 97265, 111160, 155624, 194530, 222320, 311248, 389060, 778120, 1556240]

約数ペア:

[(1, 1556240), (2, 778120), (4, 389060), (5, 311248), (7, 222320), (8, 194530), (10, 155624), (14, 111160), (16, 97265), (20, 77812), (28, 55580), (35, 44464), (40, 38906), (49, 31760), (56, 27790), (70, 22232), (80, 19453), (98, 15880), (112, 13895), (140, 11116), (196, 7940), (245, 6352), (280, 5558), (392, 3970), (397, 3920), (490, 3176), (560, 2779), (784, 1985), (794, 1960), (980, 1588)]