201075920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{911}}^1$

素因数の和:1044

約数の個数: 80

約数和(自身を含む): 488540160

約数和(自身を除く): 287464240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 89, 124, 155, 178, 248, 310, 356, 445, 496, 620, 712, 890, 911, 1240, 1424, 1780, 1822, 2480, 2759, 3560, 3644, 4555, 5518, 7120, 7288, 9110, 11036, 13795, 14576, 18220, 22072, 27590, 28241, 36440, 44144, 55180, 56482, 72880, 81079, 110360, 112964, 141205, 162158, 220720, 225928, 282410, 324316, 405395, 451856, 564820, 648632, 810790, 1129640, 1297264, 1621580, 2259280, 2513449, 3243160, 5026898, 6486320, 10053796, 12567245, 20107592, 25134490, 40215184, 50268980, 100537960, 201075920]

約数ペア:

[(1, 201075920), (2, 100537960), (4, 50268980), (5, 40215184), (8, 25134490), (10, 20107592), (16, 12567245), (20, 10053796), (31, 6486320), (40, 5026898), (62, 3243160), (80, 2513449), (89, 2259280), (124, 1621580), (155, 1297264), (178, 1129640), (248, 810790), (310, 648632), (356, 564820), (445, 451856), (496, 405395), (620, 324316), (712, 282410), (890, 225928), (911, 220720), (1240, 162158), (1424, 141205), (1780, 112964), (1822, 110360), (2480, 81079), (2759, 72880), (3560, 56482), (3644, 55180), (4555, 44144), (5518, 36440), (7120, 28241), (7288, 27590), (9110, 22072), (11036, 18220), (13795, 14576)]