320363920

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{1279}}^1$

素因数の和:1424

約数の個数: 80

約数和(自身を含む): 777093120

約数和(自身を除く): 456729200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 101, 124, 155, 202, 248, 310, 404, 496, 505, 620, 808, 1010, 1240, 1279, 1616, 2020, 2480, 2558, 3131, 4040, 5116, 6262, 6395, 8080, 10232, 12524, 12790, 15655, 20464, 25048, 25580, 31310, 39649, 50096, 51160, 62620, 79298, 102320, 125240, 129179, 158596, 198245, 250480, 258358, 317192, 396490, 516716, 634384, 645895, 792980, 1033432, 1291790, 1585960, 2066864, 2583580, 3171920, 4004549, 5167160, 8009098, 10334320, 16018196, 20022745, 32036392, 40045490, 64072784, 80090980, 160181960, 320363920]

約数ペア:

[(1, 320363920), (2, 160181960), (4, 80090980), (5, 64072784), (8, 40045490), (10, 32036392), (16, 20022745), (20, 16018196), (31, 10334320), (40, 8009098), (62, 5167160), (80, 4004549), (101, 3171920), (124, 2583580), (155, 2066864), (202, 1585960), (248, 1291790), (310, 1033432), (404, 792980), (496, 645895), (505, 634384), (620, 516716), (808, 396490), (1010, 317192), (1240, 258358), (1279, 250480), (1616, 198245), (2020, 158596), (2480, 129179), (2558, 125240), (3131, 102320), (4040, 79298), (5116, 62620), (6262, 51160), (6395, 50096), (8080, 39649), (10232, 31310), (12524, 25580), (12790, 25048), (15655, 20464)]