21409048

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2309}}^1$

素因数の和:2395

約数の個数: 32

約数和(自身を含む): 42966000

約数和(自身を除く): 21556952

約数列:

[1, 2, 4, 8, 19, 38, 61, 76, 122, 152, 244, 488, 1159, 2309, 2318, 4618, 4636, 9236, 9272, 18472, 43871, 87742, 140849, 175484, 281698, 350968, 563396, 1126792, 2676131, 5352262, 10704524, 21409048]

約数ペア:

[(1, 21409048), (2, 10704524), (4, 5352262), (8, 2676131), (19, 1126792), (38, 563396), (61, 350968), (76, 281698), (122, 175484), (152, 140849), (244, 87742), (488, 43871), (1159, 18472), (2309, 9272), (2318, 9236), (4618, 4636)]