20462640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{337}}^1$

素因数の和:387

約数の個数: 160

約数和(自身を含む): 72423936

約数和(自身を除く): 51961296

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 23, 24, 30, 33, 40, 44, 46, 48, 55, 60, 66, 69, 80, 88, 92, 110, 115, 120, 132, 138, 165, 176, 184, 220, 230, 240, 253, 264, 276, 330, 337, 345, 368, 440, 460, 506, 528, 552, 660, 674, 690, 759, 880, 920, 1011, 1012, 1104, 1265, 1320, 1348, 1380, 1518, 1685, 1840, 2022, 2024, 2530, 2640, 2696, 2760, 3036, 3370, 3707, 3795, 4044, 4048, 5055, 5060, 5392, 5520, 6072, 6740, 7414, 7590, 7751, 8088, 10110, 10120, 11121, 12144, 13480, 14828, 15180, 15502, 16176, 18535, 20220, 20240, 22242, 23253, 26960, 29656, 30360, 31004, 37070, 38755, 40440, 44484, 46506, 55605, 59312, 60720, 62008, 74140, 77510, 80880, 85261, 88968, 93012, 111210, 116265, 124016, 148280, 155020, 170522, 177936, 186024, 222420, 232530, 255783, 296560, 310040, 341044, 372048, 426305, 444840, 465060, 511566, 620080, 682088, 852610, 889680, 930120, 1023132, 1278915, 1364176, 1705220, 1860240, 2046264, 2557830, 3410440, 4092528, 5115660, 6820880, 10231320, 20462640]

約数ペア:

[(1, 20462640), (2, 10231320), (3, 6820880), (4, 5115660), (5, 4092528), (6, 3410440), (8, 2557830), (10, 2046264), (11, 1860240), (12, 1705220), (15, 1364176), (16, 1278915), (20, 1023132), (22, 930120), (23, 889680), (24, 852610), (30, 682088), (33, 620080), (40, 511566), (44, 465060), (46, 444840), (48, 426305), (55, 372048), (60, 341044), (66, 310040), (69, 296560), (80, 255783), (88, 232530), (92, 222420), (110, 186024), (115, 177936), (120, 170522), (132, 155020), (138, 148280), (165, 124016), (176, 116265), (184, 111210), (220, 93012), (230, 88968), (240, 85261), (253, 80880), (264, 77510), (276, 74140), (330, 62008), (337, 60720), (345, 59312), (368, 55605), (440, 46506), (460, 44484), (506, 40440), (528, 38755), (552, 37070), (660, 31004), (674, 30360), (690, 29656), (759, 26960), (880, 23253), (920, 22242), (1011, 20240), (1012, 20220), (1104, 18535), (1265, 16176), (1320, 15502), (1348, 15180), (1380, 14828), (1518, 13480), (1685, 12144), (1840, 11121), (2022, 10120), (2024, 10110), (2530, 8088), (2640, 7751), (2696, 7590), (2760, 7414), (3036, 6740), (3370, 6072), (3707, 5520), (3795, 5392), (4044, 5060), (4048, 5055)]