20542680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{827}}^1$

素因数の和:870

約数の個数: 128

約数和(自身を含む): 71539200

約数和(自身を除く): 50996520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 54, 60, 69, 72, 90, 92, 108, 115, 120, 135, 138, 180, 184, 207, 216, 230, 270, 276, 345, 360, 414, 460, 540, 552, 621, 690, 827, 828, 920, 1035, 1080, 1242, 1380, 1654, 1656, 2070, 2481, 2484, 2760, 3105, 3308, 4135, 4140, 4962, 4968, 6210, 6616, 7443, 8270, 8280, 9924, 12405, 12420, 14886, 16540, 19021, 19848, 22329, 24810, 24840, 29772, 33080, 37215, 38042, 44658, 49620, 57063, 59544, 74430, 76084, 89316, 95105, 99240, 111645, 114126, 148860, 152168, 171189, 178632, 190210, 223290, 228252, 285315, 297720, 342378, 380420, 446580, 456504, 513567, 570630, 684756, 760840, 855945, 893160, 1027134, 1141260, 1369512, 1711890, 2054268, 2282520, 2567835, 3423780, 4108536, 5135670, 6847560, 10271340, 20542680]

約数ペア:

[(1, 20542680), (2, 10271340), (3, 6847560), (4, 5135670), (5, 4108536), (6, 3423780), (8, 2567835), (9, 2282520), (10, 2054268), (12, 1711890), (15, 1369512), (18, 1141260), (20, 1027134), (23, 893160), (24, 855945), (27, 760840), (30, 684756), (36, 570630), (40, 513567), (45, 456504), (46, 446580), (54, 380420), (60, 342378), (69, 297720), (72, 285315), (90, 228252), (92, 223290), (108, 190210), (115, 178632), (120, 171189), (135, 152168), (138, 148860), (180, 114126), (184, 111645), (207, 99240), (216, 95105), (230, 89316), (270, 76084), (276, 74430), (345, 59544), (360, 57063), (414, 49620), (460, 44658), (540, 38042), (552, 37215), (621, 33080), (690, 29772), (827, 24840), (828, 24810), (920, 22329), (1035, 19848), (1080, 19021), (1242, 16540), (1380, 14886), (1654, 12420), (1656, 12405), (2070, 9924), (2481, 8280), (2484, 8270), (2760, 7443), (3105, 6616), (3308, 6210), (4135, 4968), (4140, 4962)]