20484720

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1279

約数の個数: 120

約数和(自身を含む): 71843616

約数和(自身を除く): 51358896

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 115, 120, 138, 144, 180, 184, 207, 230, 240, 276, 345, 360, 368, 414, 460, 552, 690, 720, 828, 920, 1035, 1104, 1237, 1380, 1656, 1840, 2070, 2474, 2760, 3312, 3711, 4140, 4948, 5520, 6185, 7422, 8280, 9896, 11133, 12370, 14844, 16560, 18555, 19792, 22266, 24740, 28451, 29688, 37110, 44532, 49480, 55665, 56902, 59376, 74220, 85353, 89064, 98960, 111330, 113804, 142255, 148440, 170706, 178128, 222660, 227608, 256059, 284510, 296880, 341412, 426765, 445320, 455216, 512118, 569020, 682824, 853530, 890640, 1024236, 1138040, 1280295, 1365648, 1707060, 2048472, 2276080, 2560590, 3414120, 4096944, 5121180, 6828240, 10242360, 20484720]

約数ペア:

[(1, 20484720), (2, 10242360), (3, 6828240), (4, 5121180), (5, 4096944), (6, 3414120), (8, 2560590), (9, 2276080), (10, 2048472), (12, 1707060), (15, 1365648), (16, 1280295), (18, 1138040), (20, 1024236), (23, 890640), (24, 853530), (30, 682824), (36, 569020), (40, 512118), (45, 455216), (46, 445320), (48, 426765), (60, 341412), (69, 296880), (72, 284510), (80, 256059), (90, 227608), (92, 222660), (115, 178128), (120, 170706), (138, 148440), (144, 142255), (180, 113804), (184, 111330), (207, 98960), (230, 89064), (240, 85353), (276, 74220), (345, 59376), (360, 56902), (368, 55665), (414, 49480), (460, 44532), (552, 37110), (690, 29688), (720, 28451), (828, 24740), (920, 22266), (1035, 19792), (1104, 18555), (1237, 16560), (1380, 14844), (1656, 12370), (1840, 11133), (2070, 9896), (2474, 8280), (2760, 7422), (3312, 6185), (3711, 5520), (4140, 4948)]