2528890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1$

素因数の和:431

約数の個数: 48

約数和(自身を含む): 5716872

約数和(自身を除く): 3187982

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 397, 455, 490, 637, 794, 910, 1274, 1985, 2779, 3185, 3970, 5161, 5558, 6370, 10322, 13895, 19453, 25805, 27790, 36127, 38906, 51610, 72254, 97265, 180635, 194530, 252889, 361270, 505778, 1264445, 2528890]

約数ペア:

[(1, 2528890), (2, 1264445), (5, 505778), (7, 361270), (10, 252889), (13, 194530), (14, 180635), (26, 97265), (35, 72254), (49, 51610), (65, 38906), (70, 36127), (91, 27790), (98, 25805), (130, 19453), (182, 13895), (245, 10322), (397, 6370), (455, 5558), (490, 5161), (637, 3970), (794, 3185), (910, 2779), (1274, 1985)]