21226940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 54104064

約数和(自身を除く): 32877124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 67, 70, 73, 124, 134, 140, 146, 155, 217, 268, 292, 310, 335, 365, 434, 469, 511, 620, 670, 730, 868, 938, 1022, 1085, 1340, 1460, 1876, 2044, 2077, 2170, 2263, 2345, 2555, 4154, 4340, 4526, 4690, 4891, 5110, 8308, 9052, 9380, 9782, 10220, 10385, 11315, 14539, 15841, 19564, 20770, 22630, 24455, 29078, 31682, 34237, 41540, 45260, 48910, 58156, 63364, 68474, 72695, 79205, 97820, 136948, 145390, 151621, 158410, 171185, 290780, 303242, 316820, 342370, 606484, 684740, 758105, 1061347, 1516210, 2122694, 3032420, 4245388, 5306735, 10613470, 21226940]

約数ペア:

[(1, 21226940), (2, 10613470), (4, 5306735), (5, 4245388), (7, 3032420), (10, 2122694), (14, 1516210), (20, 1061347), (28, 758105), (31, 684740), (35, 606484), (62, 342370), (67, 316820), (70, 303242), (73, 290780), (124, 171185), (134, 158410), (140, 151621), (146, 145390), (155, 136948), (217, 97820), (268, 79205), (292, 72695), (310, 68474), (335, 63364), (365, 58156), (434, 48910), (469, 45260), (511, 41540), (620, 34237), (670, 31682), (730, 29078), (868, 24455), (938, 22630), (1022, 20770), (1085, 19564), (1340, 15841), (1460, 14539), (1876, 11315), (2044, 10385), (2077, 10220), (2170, 9782), (2263, 9380), (2345, 9052), (2555, 8308), (4154, 5110), (4340, 4891), (4526, 4690)]