21159952

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{1103}}^1$

素因数の和:1231

約数の個数: 40

約数和(自身を含む): 45175680

約数和(自身を除く): 24015728

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 109, 176, 218, 436, 872, 1103, 1199, 1744, 2206, 2398, 4412, 4796, 8824, 9592, 12133, 17648, 19184, 24266, 48532, 97064, 120227, 194128, 240454, 480908, 961816, 1322497, 1923632, 2644994, 5289988, 10579976, 21159952]

約数ペア:

[(1, 21159952), (2, 10579976), (4, 5289988), (8, 2644994), (11, 1923632), (16, 1322497), (22, 961816), (44, 480908), (88, 240454), (109, 194128), (176, 120227), (218, 97064), (436, 48532), (872, 24266), (1103, 19184), (1199, 17648), (1744, 12133), (2206, 9592), (2398, 8824), (4412, 4796)]