1911980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1951}}^1$

素因数の和:1974

約数の個数: 36

約数和(自身を含む): 4673088

約数和(自身を除く): 2761108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1951, 3902, 7804, 9755, 13657, 19510, 27314, 39020, 54628, 68285, 95599, 136570, 191198, 273140, 382396, 477995, 955990, 1911980]

約数ペア:

[(1, 1911980), (2, 955990), (4, 477995), (5, 382396), (7, 273140), (10, 191198), (14, 136570), (20, 95599), (28, 68285), (35, 54628), (49, 39020), (70, 27314), (98, 19510), (140, 13657), (196, 9755), (245, 7804), (490, 3902), (980, 1951)]