89978988

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2059

約数の個数: 72

約数和(自身を含む): 238336000

約数和(自身を除く): 148357012

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 31, 33, 44, 62, 66, 93, 121, 124, 132, 186, 242, 341, 363, 372, 484, 682, 726, 1023, 1364, 1452, 1999, 2046, 3751, 3998, 4092, 5997, 7502, 7996, 11253, 11994, 15004, 21989, 22506, 23988, 43978, 45012, 61969, 65967, 87956, 123938, 131934, 185907, 241879, 247876, 263868, 371814, 483758, 681659, 725637, 743628, 967516, 1363318, 1451274, 2044977, 2726636, 2902548, 4089954, 7498249, 8179908, 14996498, 22494747, 29992996, 44989494, 89978988]

約数ペア:

[(1, 89978988), (2, 44989494), (3, 29992996), (4, 22494747), (6, 14996498), (11, 8179908), (12, 7498249), (22, 4089954), (31, 2902548), (33, 2726636), (44, 2044977), (62, 1451274), (66, 1363318), (93, 967516), (121, 743628), (124, 725637), (132, 681659), (186, 483758), (242, 371814), (341, 263868), (363, 247876), (372, 241879), (484, 185907), (682, 131934), (726, 123938), (1023, 87956), (1364, 65967), (1452, 61969), (1999, 45012), (2046, 43978), (3751, 23988), (3998, 22506), (4092, 21989), (5997, 15004), (7502, 11994), (7996, 11253)]