20210416

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{1109}}^1$

素因数の和:1201

約数の個数: 40

約数和(自身を含む): 42117840

約数和(自身を除く): 21907424

約数列:

[1, 2, 4, 8, 16, 17, 34, 67, 68, 134, 136, 268, 272, 536, 1072, 1109, 1139, 2218, 2278, 4436, 4556, 8872, 9112, 17744, 18224, 18853, 37706, 74303, 75412, 148606, 150824, 297212, 301648, 594424, 1188848, 1263151, 2526302, 5052604, 10105208, 20210416]

約数ペア:

[(1, 20210416), (2, 10105208), (4, 5052604), (8, 2526302), (16, 1263151), (17, 1188848), (34, 594424), (67, 301648), (68, 297212), (134, 150824), (136, 148606), (268, 75412), (272, 74303), (536, 37706), (1072, 18853), (1109, 18224), (1139, 17744), (2218, 9112), (2278, 8872), (4436, 4556)]