19800468

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{12791}}^1$

素因数の和:12844

約数の個数: 36

約数和(自身を含む): 51219168

約数和(自身を除く): 31418700

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 12791, 25582, 38373, 51164, 76746, 115119, 153492, 230238, 460476, 550013, 1100026, 1650039, 2200052, 3300078, 4950117, 6600156, 9900234, 19800468]

約数ペア:

[(1, 19800468), (2, 9900234), (3, 6600156), (4, 4950117), (6, 3300078), (9, 2200052), (12, 1650039), (18, 1100026), (36, 550013), (43, 460476), (86, 230238), (129, 153492), (172, 115119), (258, 76746), (387, 51164), (516, 38373), (774, 25582), (1548, 12791)]