21019680

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1327}}^1$

素因数の和:1359

約数の個数: 144

約数和(自身を含む): 78309504

約数和(自身を除く): 57289824

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 32, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 96, 99, 110, 120, 132, 144, 160, 165, 176, 180, 198, 220, 240, 264, 288, 330, 352, 360, 396, 440, 480, 495, 528, 660, 720, 792, 880, 990, 1056, 1320, 1327, 1440, 1584, 1760, 1980, 2640, 2654, 3168, 3960, 3981, 5280, 5308, 6635, 7920, 7962, 10616, 11943, 13270, 14597, 15840, 15924, 19905, 21232, 23886, 26540, 29194, 31848, 39810, 42464, 43791, 47772, 53080, 58388, 59715, 63696, 72985, 79620, 87582, 95544, 106160, 116776, 119430, 127392, 131373, 145970, 159240, 175164, 191088, 212320, 218955, 233552, 238860, 262746, 291940, 318480, 350328, 382176, 437910, 467104, 477720, 525492, 583880, 636960, 656865, 700656, 875820, 955440, 1050984, 1167760, 1313730, 1401312, 1751640, 1910880, 2101968, 2335520, 2627460, 3503280, 4203936, 5254920, 7006560, 10509840, 21019680]

約数ペア:

[(1, 21019680), (2, 10509840), (3, 7006560), (4, 5254920), (5, 4203936), (6, 3503280), (8, 2627460), (9, 2335520), (10, 2101968), (11, 1910880), (12, 1751640), (15, 1401312), (16, 1313730), (18, 1167760), (20, 1050984), (22, 955440), (24, 875820), (30, 700656), (32, 656865), (33, 636960), (36, 583880), (40, 525492), (44, 477720), (45, 467104), (48, 437910), (55, 382176), (60, 350328), (66, 318480), (72, 291940), (80, 262746), (88, 238860), (90, 233552), (96, 218955), (99, 212320), (110, 191088), (120, 175164), (132, 159240), (144, 145970), (160, 131373), (165, 127392), (176, 119430), (180, 116776), (198, 106160), (220, 95544), (240, 87582), (264, 79620), (288, 72985), (330, 63696), (352, 59715), (360, 58388), (396, 53080), (440, 47772), (480, 43791), (495, 42464), (528, 39810), (660, 31848), (720, 29194), (792, 26540), (880, 23886), (990, 21232), (1056, 19905), (1320, 15924), (1327, 15840), (1440, 14597), (1584, 13270), (1760, 11943), (1980, 10616), (2640, 7962), (2654, 7920), (3168, 6635), (3960, 5308), (3981, 5280)]