21819240

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:336

約数の個数: 128

約数和(自身を含む): 73872000

約数和(自身を除く): 52052760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 89, 90, 108, 120, 135, 178, 180, 216, 227, 267, 270, 356, 360, 445, 454, 534, 540, 681, 712, 801, 890, 908, 1068, 1080, 1135, 1335, 1362, 1602, 1780, 1816, 2043, 2136, 2270, 2403, 2670, 2724, 3204, 3405, 3560, 4005, 4086, 4540, 4806, 5340, 5448, 6129, 6408, 6810, 8010, 8172, 9080, 9612, 10215, 10680, 12015, 12258, 13620, 16020, 16344, 19224, 20203, 20430, 24030, 24516, 27240, 30645, 32040, 40406, 40860, 48060, 49032, 60609, 61290, 80812, 81720, 96120, 101015, 121218, 122580, 161624, 181827, 202030, 242436, 245160, 303045, 363654, 404060, 484872, 545481, 606090, 727308, 808120, 909135, 1090962, 1212180, 1454616, 1818270, 2181924, 2424360, 2727405, 3636540, 4363848, 5454810, 7273080, 10909620, 21819240]

約数ペア:

[(1, 21819240), (2, 10909620), (3, 7273080), (4, 5454810), (5, 4363848), (6, 3636540), (8, 2727405), (9, 2424360), (10, 2181924), (12, 1818270), (15, 1454616), (18, 1212180), (20, 1090962), (24, 909135), (27, 808120), (30, 727308), (36, 606090), (40, 545481), (45, 484872), (54, 404060), (60, 363654), (72, 303045), (89, 245160), (90, 242436), (108, 202030), (120, 181827), (135, 161624), (178, 122580), (180, 121218), (216, 101015), (227, 96120), (267, 81720), (270, 80812), (356, 61290), (360, 60609), (445, 49032), (454, 48060), (534, 40860), (540, 40406), (681, 32040), (712, 30645), (801, 27240), (890, 24516), (908, 24030), (1068, 20430), (1080, 20203), (1135, 19224), (1335, 16344), (1362, 16020), (1602, 13620), (1780, 12258), (1816, 12015), (2043, 10680), (2136, 10215), (2270, 9612), (2403, 9080), (2670, 8172), (2724, 8010), (3204, 6810), (3405, 6408), (3560, 6129), (4005, 5448), (4086, 5340), (4540, 4806)]