21347550

素因数分解:

$2^1\times 3^5\times 5^2\times 7^1\times {\mathrm{251}}^1$

素因数の和:285

約数の個数: 144

約数和(自身を含む): 68245632

約数和(自身を除く): 46898082

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 27, 30, 35, 42, 45, 50, 54, 63, 70, 75, 81, 90, 105, 126, 135, 150, 162, 175, 189, 210, 225, 243, 251, 270, 315, 350, 378, 405, 450, 486, 502, 525, 567, 630, 675, 753, 810, 945, 1050, 1134, 1215, 1255, 1350, 1506, 1575, 1701, 1757, 1890, 2025, 2259, 2430, 2510, 2835, 3150, 3402, 3514, 3765, 4050, 4518, 4725, 5271, 5670, 6075, 6275, 6777, 7530, 8505, 8785, 9450, 10542, 11295, 12150, 12550, 13554, 14175, 15813, 17010, 17570, 18825, 20331, 22590, 26355, 28350, 31626, 33885, 37650, 40662, 42525, 43925, 47439, 52710, 56475, 60993, 67770, 79065, 85050, 87850, 94878, 101655, 112950, 121986, 131775, 142317, 158130, 169425, 203310, 237195, 263550, 284634, 304965, 338850, 395325, 426951, 474390, 508275, 609930, 711585, 790650, 853902, 1016550, 1185975, 1423170, 1524825, 2134755, 2371950, 3049650, 3557925, 4269510, 7115850, 10673775, 21347550]

約数ペア:

[(1, 21347550), (2, 10673775), (3, 7115850), (5, 4269510), (6, 3557925), (7, 3049650), (9, 2371950), (10, 2134755), (14, 1524825), (15, 1423170), (18, 1185975), (21, 1016550), (25, 853902), (27, 790650), (30, 711585), (35, 609930), (42, 508275), (45, 474390), (50, 426951), (54, 395325), (63, 338850), (70, 304965), (75, 284634), (81, 263550), (90, 237195), (105, 203310), (126, 169425), (135, 158130), (150, 142317), (162, 131775), (175, 121986), (189, 112950), (210, 101655), (225, 94878), (243, 87850), (251, 85050), (270, 79065), (315, 67770), (350, 60993), (378, 56475), (405, 52710), (450, 47439), (486, 43925), (502, 42525), (525, 40662), (567, 37650), (630, 33885), (675, 31626), (753, 28350), (810, 26355), (945, 22590), (1050, 20331), (1134, 18825), (1215, 17570), (1255, 17010), (1350, 15813), (1506, 14175), (1575, 13554), (1701, 12550), (1757, 12150), (1890, 11295), (2025, 10542), (2259, 9450), (2430, 8785), (2510, 8505), (2835, 7530), (3150, 6777), (3402, 6275), (3514, 6075), (3765, 5670), (4050, 5271), (4518, 4725)]