20704830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{811}}^1$

素因数の和:881

約数の個数: 64

約数和(自身を含む): 53319168

約数和(自身を除く): 32614338

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 37, 46, 69, 74, 111, 115, 138, 185, 222, 230, 345, 370, 555, 690, 811, 851, 1110, 1622, 1702, 2433, 2553, 4055, 4255, 4866, 5106, 8110, 8510, 12165, 12765, 18653, 24330, 25530, 30007, 37306, 55959, 60014, 90021, 93265, 111918, 150035, 180042, 186530, 279795, 300070, 450105, 559590, 690161, 900210, 1380322, 2070483, 3450805, 4140966, 6901610, 10352415, 20704830]

約数ペア:

[(1, 20704830), (2, 10352415), (3, 6901610), (5, 4140966), (6, 3450805), (10, 2070483), (15, 1380322), (23, 900210), (30, 690161), (37, 559590), (46, 450105), (69, 300070), (74, 279795), (111, 186530), (115, 180042), (138, 150035), (185, 111918), (222, 93265), (230, 90021), (345, 60014), (370, 55959), (555, 37306), (690, 30007), (811, 25530), (851, 24330), (1110, 18653), (1622, 12765), (1702, 12165), (2433, 8510), (2553, 8110), (4055, 5106), (4255, 4866)]