20689410

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{1187}}^1$

素因数の和:1287

約数の個数: 64

約数和(自身を含む): 57480192

約数和(自身を除く): 36790782

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 83, 105, 166, 210, 249, 415, 498, 581, 830, 1162, 1187, 1245, 1743, 2374, 2490, 2905, 3486, 3561, 5810, 5935, 7122, 8309, 8715, 11870, 16618, 17430, 17805, 24927, 35610, 41545, 49854, 83090, 98521, 124635, 197042, 249270, 295563, 492605, 591126, 689647, 985210, 1379294, 1477815, 2068941, 2955630, 3448235, 4137882, 6896470, 10344705, 20689410]

約数ペア:

[(1, 20689410), (2, 10344705), (3, 6896470), (5, 4137882), (6, 3448235), (7, 2955630), (10, 2068941), (14, 1477815), (15, 1379294), (21, 985210), (30, 689647), (35, 591126), (42, 492605), (70, 295563), (83, 249270), (105, 197042), (166, 124635), (210, 98521), (249, 83090), (415, 49854), (498, 41545), (581, 35610), (830, 24927), (1162, 17805), (1187, 17430), (1245, 16618), (1743, 11870), (2374, 8715), (2490, 8309), (2905, 7122), (3486, 5935), (3561, 5810)]