21439680

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{971}}^1$

素因数の和:1014

約数の個数: 112

約数和(自身を含む): 71103744

約数和(自身を除く): 49664064

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 23, 24, 30, 32, 40, 46, 48, 60, 64, 69, 80, 92, 96, 115, 120, 138, 160, 184, 192, 230, 240, 276, 320, 345, 368, 460, 480, 552, 690, 736, 920, 960, 971, 1104, 1380, 1472, 1840, 1942, 2208, 2760, 2913, 3680, 3884, 4416, 4855, 5520, 5826, 7360, 7768, 9710, 11040, 11652, 14565, 15536, 19420, 22080, 22333, 23304, 29130, 31072, 38840, 44666, 46608, 58260, 62144, 66999, 77680, 89332, 93216, 111665, 116520, 133998, 155360, 178664, 186432, 223330, 233040, 267996, 310720, 334995, 357328, 446660, 466080, 535992, 669990, 714656, 893320, 932160, 1071984, 1339980, 1429312, 1786640, 2143968, 2679960, 3573280, 4287936, 5359920, 7146560, 10719840, 21439680]

約数ペア:

[(1, 21439680), (2, 10719840), (3, 7146560), (4, 5359920), (5, 4287936), (6, 3573280), (8, 2679960), (10, 2143968), (12, 1786640), (15, 1429312), (16, 1339980), (20, 1071984), (23, 932160), (24, 893320), (30, 714656), (32, 669990), (40, 535992), (46, 466080), (48, 446660), (60, 357328), (64, 334995), (69, 310720), (80, 267996), (92, 233040), (96, 223330), (115, 186432), (120, 178664), (138, 155360), (160, 133998), (184, 116520), (192, 111665), (230, 93216), (240, 89332), (276, 77680), (320, 66999), (345, 62144), (368, 58260), (460, 46608), (480, 44666), (552, 38840), (690, 31072), (736, 29130), (920, 23304), (960, 22333), (971, 22080), (1104, 19420), (1380, 15536), (1472, 14565), (1840, 11652), (1942, 11040), (2208, 9710), (2760, 7768), (2913, 7360), (3680, 5826), (3884, 5520), (4416, 4855)]