20912400

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:218

約数の個数: 180

約数和(自身を含む): 75007972

約数和(自身を除く): 54095572

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 37, 40, 45, 48, 50, 60, 72, 74, 75, 80, 90, 100, 111, 120, 144, 148, 150, 157, 180, 185, 200, 222, 225, 240, 296, 300, 314, 333, 360, 370, 400, 444, 450, 471, 555, 592, 600, 628, 666, 720, 740, 785, 888, 900, 925, 942, 1110, 1200, 1256, 1332, 1413, 1480, 1570, 1665, 1776, 1800, 1850, 1884, 2220, 2355, 2512, 2664, 2775, 2826, 2960, 3140, 3330, 3600, 3700, 3768, 3925, 4440, 4710, 5328, 5550, 5652, 5809, 6280, 6660, 7065, 7400, 7536, 7850, 8325, 8880, 9420, 11100, 11304, 11618, 11775, 12560, 13320, 14130, 14800, 15700, 16650, 17427, 18840, 22200, 22608, 23236, 23550, 26640, 28260, 29045, 31400, 33300, 34854, 35325, 37680, 44400, 46472, 47100, 52281, 56520, 58090, 62800, 66600, 69708, 70650, 87135, 92944, 94200, 104562, 113040, 116180, 133200, 139416, 141300, 145225, 174270, 188400, 209124, 232360, 261405, 278832, 282600, 290450, 348540, 418248, 435675, 464720, 522810, 565200, 580900, 697080, 836496, 871350, 1045620, 1161800, 1307025, 1394160, 1742700, 2091240, 2323600, 2614050, 3485400, 4182480, 5228100, 6970800, 10456200, 20912400]

約数ペア:

[(1, 20912400), (2, 10456200), (3, 6970800), (4, 5228100), (5, 4182480), (6, 3485400), (8, 2614050), (9, 2323600), (10, 2091240), (12, 1742700), (15, 1394160), (16, 1307025), (18, 1161800), (20, 1045620), (24, 871350), (25, 836496), (30, 697080), (36, 580900), (37, 565200), (40, 522810), (45, 464720), (48, 435675), (50, 418248), (60, 348540), (72, 290450), (74, 282600), (75, 278832), (80, 261405), (90, 232360), (100, 209124), (111, 188400), (120, 174270), (144, 145225), (148, 141300), (150, 139416), (157, 133200), (180, 116180), (185, 113040), (200, 104562), (222, 94200), (225, 92944), (240, 87135), (296, 70650), (300, 69708), (314, 66600), (333, 62800), (360, 58090), (370, 56520), (400, 52281), (444, 47100), (450, 46472), (471, 44400), (555, 37680), (592, 35325), (600, 34854), (628, 33300), (666, 31400), (720, 29045), (740, 28260), (785, 26640), (888, 23550), (900, 23236), (925, 22608), (942, 22200), (1110, 18840), (1200, 17427), (1256, 16650), (1332, 15700), (1413, 14800), (1480, 14130), (1570, 13320), (1665, 12560), (1776, 11775), (1800, 11618), (1850, 11304), (1884, 11100), (2220, 9420), (2355, 8880), (2512, 8325), (2664, 7850), (2775, 7536), (2826, 7400), (2960, 7065), (3140, 6660), (3330, 6280), (3600, 5809), (3700, 5652), (3768, 5550), (3925, 5328), (4440, 4710)]