2790620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{643}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 6924288

約数和(自身を除く): 4133668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 643, 868, 1085, 1286, 2170, 2572, 3215, 4340, 4501, 6430, 9002, 12860, 18004, 19933, 22505, 39866, 45010, 79732, 90020, 99665, 139531, 199330, 279062, 398660, 558124, 697655, 1395310, 2790620]

約数ペア:

[(1, 2790620), (2, 1395310), (4, 697655), (5, 558124), (7, 398660), (10, 279062), (14, 199330), (20, 139531), (28, 99665), (31, 90020), (35, 79732), (62, 45010), (70, 39866), (124, 22505), (140, 19933), (155, 18004), (217, 12860), (310, 9002), (434, 6430), (620, 4501), (643, 4340), (868, 3215), (1085, 2572), (1286, 2170)]