21226660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:245

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 34656860

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 107, 109, 130, 140, 182, 214, 218, 260, 364, 428, 436, 455, 535, 545, 749, 763, 910, 1070, 1090, 1391, 1417, 1498, 1526, 1820, 2140, 2180, 2782, 2834, 2996, 3052, 3745, 3815, 5564, 5668, 6955, 7085, 7490, 7630, 9737, 9919, 11663, 13910, 14170, 14980, 15260, 19474, 19838, 23326, 27820, 28340, 38948, 39676, 46652, 48685, 49595, 58315, 81641, 97370, 99190, 116630, 151619, 163282, 194740, 198380, 233260, 303238, 326564, 408205, 606476, 758095, 816410, 1061333, 1516190, 1632820, 2122666, 3032380, 4245332, 5306665, 10613330, 21226660]

約数ペア:

[(1, 21226660), (2, 10613330), (4, 5306665), (5, 4245332), (7, 3032380), (10, 2122666), (13, 1632820), (14, 1516190), (20, 1061333), (26, 816410), (28, 758095), (35, 606476), (52, 408205), (65, 326564), (70, 303238), (91, 233260), (107, 198380), (109, 194740), (130, 163282), (140, 151619), (182, 116630), (214, 99190), (218, 97370), (260, 81641), (364, 58315), (428, 49595), (436, 48685), (455, 46652), (535, 39676), (545, 38948), (749, 28340), (763, 27820), (910, 23326), (1070, 19838), (1090, 19474), (1391, 15260), (1417, 14980), (1498, 14170), (1526, 13910), (1820, 11663), (2140, 9919), (2180, 9737), (2782, 7630), (2834, 7490), (2996, 7085), (3052, 6955), (3745, 5668), (3815, 5564)]