19977208

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{787}}^1$

素因数の和:979

約数の個数: 32

約数和(自身を含む): 39715200

約数和(自身を除く): 19737992

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 167, 334, 668, 787, 1336, 1574, 3148, 3173, 6296, 6346, 12692, 14953, 25384, 29906, 59812, 119624, 131429, 262858, 525716, 1051432, 2497151, 4994302, 9988604, 19977208]

約数ペア:

[(1, 19977208), (2, 9988604), (4, 4994302), (8, 2497151), (19, 1051432), (38, 525716), (76, 262858), (152, 131429), (167, 119624), (334, 59812), (668, 29906), (787, 25384), (1336, 14953), (1574, 12692), (3148, 6346), (3173, 6296)]