20890188

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{743}}^1$

素因数の和:835

約数の個数: 72

約数和(自身を含む): 58496256

約数和(自身を除く): 37606068

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 71, 99, 132, 142, 198, 213, 284, 396, 426, 639, 743, 781, 852, 1278, 1486, 1562, 2229, 2343, 2556, 2972, 3124, 4458, 4686, 6687, 7029, 8173, 8916, 9372, 13374, 14058, 16346, 24519, 26748, 28116, 32692, 49038, 52753, 73557, 98076, 105506, 147114, 158259, 211012, 294228, 316518, 474777, 580283, 633036, 949554, 1160566, 1740849, 1899108, 2321132, 3481698, 5222547, 6963396, 10445094, 20890188]

約数ペア:

[(1, 20890188), (2, 10445094), (3, 6963396), (4, 5222547), (6, 3481698), (9, 2321132), (11, 1899108), (12, 1740849), (18, 1160566), (22, 949554), (33, 633036), (36, 580283), (44, 474777), (66, 316518), (71, 294228), (99, 211012), (132, 158259), (142, 147114), (198, 105506), (213, 98076), (284, 73557), (396, 52753), (426, 49038), (639, 32692), (743, 28116), (781, 26748), (852, 24519), (1278, 16346), (1486, 14058), (1562, 13374), (2229, 9372), (2343, 8916), (2556, 8173), (2972, 7029), (3124, 6687), (4458, 4686)]