2807980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 6967296

約数和(自身を除く): 4159316

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 647, 868, 1085, 1294, 2170, 2588, 3235, 4340, 4529, 6470, 9058, 12940, 18116, 20057, 22645, 40114, 45290, 80228, 90580, 100285, 140399, 200570, 280798, 401140, 561596, 701995, 1403990, 2807980]

約数ペア:

[(1, 2807980), (2, 1403990), (4, 701995), (5, 561596), (7, 401140), (10, 280798), (14, 200570), (20, 140399), (28, 100285), (31, 90580), (35, 80228), (62, 45290), (70, 40114), (124, 22645), (140, 20057), (155, 18116), (217, 12940), (310, 9058), (434, 6470), (620, 4529), (647, 4340), (868, 3235), (1085, 2588), (1294, 2170)]