64807640

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{16703}}^1$

素因数の和:16811

約数の個数: 32

約数和(自身を含む): 147329280

約数和(自身を除く): 82521640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 16703, 33406, 66812, 83515, 133624, 167030, 334060, 668120, 1620191, 3240382, 6480764, 8100955, 12961528, 16201910, 32403820, 64807640]

約数ペア:

[(1, 64807640), (2, 32403820), (4, 16201910), (5, 12961528), (8, 8100955), (10, 6480764), (20, 3240382), (40, 1620191), (97, 668120), (194, 334060), (388, 167030), (485, 133624), (776, 83515), (970, 66812), (1940, 33406), (3880, 16703)]