1279880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{653}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 3355020

約数和(自身を除く): 2075140

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 653, 980, 1306, 1960, 2612, 3265, 4571, 5224, 6530, 9142, 13060, 18284, 22855, 26120, 31997, 36568, 45710, 63994, 91420, 127988, 159985, 182840, 255976, 319970, 639940, 1279880]

約数ペア:

[(1, 1279880), (2, 639940), (4, 319970), (5, 255976), (7, 182840), (8, 159985), (10, 127988), (14, 91420), (20, 63994), (28, 45710), (35, 36568), (40, 31997), (49, 26120), (56, 22855), (70, 18284), (98, 13060), (140, 9142), (196, 6530), (245, 5224), (280, 4571), (392, 3265), (490, 2612), (653, 1960), (980, 1306)]