21415320

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{251}}^1$

素因数の和:350

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 51160680

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, 79, 90, 108, 120, 135, 158, 180, 216, 237, 251, 270, 316, 360, 395, 474, 502, 540, 632, 711, 753, 790, 948, 1004, 1080, 1185, 1255, 1422, 1506, 1580, 1896, 2008, 2133, 2259, 2370, 2510, 2844, 3012, 3160, 3555, 3765, 4266, 4518, 4740, 5020, 5688, 6024, 6777, 7110, 7530, 8532, 9036, 9480, 10040, 10665, 11295, 13554, 14220, 15060, 17064, 18072, 19829, 21330, 22590, 27108, 28440, 30120, 33885, 39658, 42660, 45180, 54216, 59487, 67770, 79316, 85320, 90360, 99145, 118974, 135540, 158632, 178461, 198290, 237948, 271080, 297435, 356922, 396580, 475896, 535383, 594870, 713844, 793160, 892305, 1070766, 1189740, 1427688, 1784610, 2141532, 2379480, 2676915, 3569220, 4283064, 5353830, 7138440, 10707660, 21415320]

約数ペア:

[(1, 21415320), (2, 10707660), (3, 7138440), (4, 5353830), (5, 4283064), (6, 3569220), (8, 2676915), (9, 2379480), (10, 2141532), (12, 1784610), (15, 1427688), (18, 1189740), (20, 1070766), (24, 892305), (27, 793160), (30, 713844), (36, 594870), (40, 535383), (45, 475896), (54, 396580), (60, 356922), (72, 297435), (79, 271080), (90, 237948), (108, 198290), (120, 178461), (135, 158632), (158, 135540), (180, 118974), (216, 99145), (237, 90360), (251, 85320), (270, 79316), (316, 67770), (360, 59487), (395, 54216), (474, 45180), (502, 42660), (540, 39658), (632, 33885), (711, 30120), (753, 28440), (790, 27108), (948, 22590), (1004, 21330), (1080, 19829), (1185, 18072), (1255, 17064), (1422, 15060), (1506, 14220), (1580, 13554), (1896, 11295), (2008, 10665), (2133, 10040), (2259, 9480), (2370, 9036), (2510, 8532), (2844, 7530), (3012, 7110), (3160, 6777), (3555, 6024), (3765, 5688), (4266, 5020), (4518, 4740)]