21324536

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{587}}^1$

素因数の和:851

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 21011464

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 239, 478, 587, 956, 1174, 1912, 2348, 4541, 4696, 9082, 11153, 18164, 22306, 36328, 44612, 89224, 140293, 280586, 561172, 1122344, 2665567, 5331134, 10662268, 21324536]

約数ペア:

[(1, 21324536), (2, 10662268), (4, 5331134), (8, 2665567), (19, 1122344), (38, 561172), (76, 280586), (152, 140293), (239, 89224), (478, 44612), (587, 36328), (956, 22306), (1174, 18164), (1912, 11153), (2348, 9082), (4541, 4696)]