19839160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4099}}^1$

素因数の和:4132

約数の個数: 48

約数和(自身を含む): 49077000

約数和(自身を除く): 29237840

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4099, 4840, 8198, 16396, 20495, 32792, 40990, 45089, 81980, 90178, 163960, 180356, 225445, 360712, 450890, 495979, 901780, 991958, 1803560, 1983916, 2479895, 3967832, 4959790, 9919580, 19839160]

約数ペア:

[(1, 19839160), (2, 9919580), (4, 4959790), (5, 3967832), (8, 2479895), (10, 1983916), (11, 1803560), (20, 991958), (22, 901780), (40, 495979), (44, 450890), (55, 360712), (88, 225445), (110, 180356), (121, 163960), (220, 90178), (242, 81980), (440, 45089), (484, 40990), (605, 32792), (968, 20495), (1210, 16396), (2420, 8198), (4099, 4840)]