20509680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{881}}^1$

素因数の和:994

約数の個数: 80

約数和(自身を含む): 64308384

約数和(自身を除く): 43798704

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 881, 970, 1164, 1455, 1552, 1762, 1940, 2328, 2643, 2910, 3524, 3880, 4405, 4656, 5286, 5820, 7048, 7760, 8810, 10572, 11640, 13215, 14096, 17620, 21144, 23280, 26430, 35240, 42288, 52860, 70480, 85457, 105720, 170914, 211440, 256371, 341828, 427285, 512742, 683656, 854570, 1025484, 1281855, 1367312, 1709140, 2050968, 2563710, 3418280, 4101936, 5127420, 6836560, 10254840, 20509680]

約数ペア:

[(1, 20509680), (2, 10254840), (3, 6836560), (4, 5127420), (5, 4101936), (6, 3418280), (8, 2563710), (10, 2050968), (12, 1709140), (15, 1367312), (16, 1281855), (20, 1025484), (24, 854570), (30, 683656), (40, 512742), (48, 427285), (60, 341828), (80, 256371), (97, 211440), (120, 170914), (194, 105720), (240, 85457), (291, 70480), (388, 52860), (485, 42288), (582, 35240), (776, 26430), (881, 23280), (970, 21144), (1164, 17620), (1455, 14096), (1552, 13215), (1762, 11640), (1940, 10572), (2328, 8810), (2643, 7760), (2910, 7048), (3524, 5820), (3880, 5286), (4405, 4656)]