20493840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5023}}^1$

素因数の和:5056

約数の個数: 80

約数和(自身を含む): 67281408

約数和(自身を除く): 46787568

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 5023, 10046, 15069, 20092, 25115, 30138, 40184, 50230, 60276, 75345, 80368, 85391, 100460, 120552, 150690, 170782, 200920, 241104, 256173, 301380, 341564, 401840, 426955, 512346, 602760, 683128, 853910, 1024692, 1205520, 1280865, 1366256, 1707820, 2049384, 2561730, 3415640, 4098768, 5123460, 6831280, 10246920, 20493840]

約数ペア:

[(1, 20493840), (2, 10246920), (3, 6831280), (4, 5123460), (5, 4098768), (6, 3415640), (8, 2561730), (10, 2049384), (12, 1707820), (15, 1366256), (16, 1280865), (17, 1205520), (20, 1024692), (24, 853910), (30, 683128), (34, 602760), (40, 512346), (48, 426955), (51, 401840), (60, 341564), (68, 301380), (80, 256173), (85, 241104), (102, 200920), (120, 170782), (136, 150690), (170, 120552), (204, 100460), (240, 85391), (255, 80368), (272, 75345), (340, 60276), (408, 50230), (510, 40184), (680, 30138), (816, 25115), (1020, 20092), (1360, 15069), (2040, 10046), (4080, 5023)]