21413115

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1217}}^1$

素因数の和:1268

約数の個数: 48

約数和(自身を含む): 41041728

約数和(自身を除く): 19628613

約数列:

[1, 3, 5, 9, 15, 17, 23, 45, 51, 69, 85, 115, 153, 207, 255, 345, 391, 765, 1035, 1173, 1217, 1955, 3519, 3651, 5865, 6085, 10953, 17595, 18255, 20689, 27991, 54765, 62067, 83973, 103445, 139955, 186201, 251919, 310335, 419865, 475847, 931005, 1259595, 1427541, 2379235, 4282623, 7137705, 21413115]

約数ペア:

[(1, 21413115), (3, 7137705), (5, 4282623), (9, 2379235), (15, 1427541), (17, 1259595), (23, 931005), (45, 475847), (51, 419865), (69, 310335), (85, 251919), (115, 186201), (153, 139955), (207, 103445), (255, 83973), (345, 62067), (391, 54765), (765, 27991), (1035, 20689), (1173, 18255), (1217, 17595), (1955, 10953), (3519, 6085), (3651, 5865)]