21237356

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{569}}^1$

素因数の和:654

約数の個数: 48

約数和(自身を含む): 44943360

約数和(自身を除く): 23706004

約数列:

[1, 2, 4, 7, 14, 28, 31, 43, 62, 86, 124, 172, 217, 301, 434, 569, 602, 868, 1138, 1204, 1333, 2276, 2666, 3983, 5332, 7966, 9331, 15932, 17639, 18662, 24467, 35278, 37324, 48934, 70556, 97868, 123473, 171269, 246946, 342538, 493892, 685076, 758477, 1516954, 3033908, 5309339, 10618678, 21237356]

約数ペア:

[(1, 21237356), (2, 10618678), (4, 5309339), (7, 3033908), (14, 1516954), (28, 758477), (31, 685076), (43, 493892), (62, 342538), (86, 246946), (124, 171269), (172, 123473), (217, 97868), (301, 70556), (434, 48934), (569, 37324), (602, 35278), (868, 24467), (1138, 18662), (1204, 17639), (1333, 15932), (2276, 9331), (2666, 7966), (3983, 5332)]