20045438

素因数分解:

$2^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 35985600

約数和(自身を除く): 15940162

約数列:

[1, 2, 7, 14, 29, 58, 97, 194, 203, 406, 509, 679, 1018, 1358, 2813, 3563, 5626, 7126, 14761, 19691, 29522, 39382, 49373, 98746, 103327, 206654, 345611, 691222, 1431817, 2863634, 10022719, 20045438]

約数ペア:

[(1, 20045438), (2, 10022719), (7, 2863634), (14, 1431817), (29, 691222), (58, 345611), (97, 206654), (194, 103327), (203, 98746), (406, 49373), (509, 39382), (679, 29522), (1018, 19691), (1358, 14761), (2813, 7126), (3563, 5626)]