280803490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{239}}^1\times {\mathrm{971}}^1$

素因数の和:1239

約数の個数: 48

約数和(自身を含む): 558472320

約数和(自身を除く): 277668830

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 239, 242, 478, 605, 971, 1195, 1210, 1942, 2390, 2629, 4855, 5258, 9710, 10681, 13145, 21362, 26290, 28919, 53405, 57838, 106810, 117491, 144595, 232069, 234982, 289190, 464138, 587455, 1160345, 1174910, 2320690, 2552759, 5105518, 12763795, 25527590, 28080349, 56160698, 140401745, 280803490]

約数ペア:

[(1, 280803490), (2, 140401745), (5, 56160698), (10, 28080349), (11, 25527590), (22, 12763795), (55, 5105518), (110, 2552759), (121, 2320690), (239, 1174910), (242, 1160345), (478, 587455), (605, 464138), (971, 289190), (1195, 234982), (1210, 232069), (1942, 144595), (2390, 117491), (2629, 106810), (4855, 57838), (5258, 53405), (9710, 28919), (10681, 26290), (13145, 21362)]