20216280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{587}}^1$

素因数の和:649

約数の個数: 128

約数和(自身を含む): 71124480

約数和(自身を除く): 50908200

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 587, 615, 820, 840, 861, 984, 1148, 1174, 1230, 1435, 1640, 1722, 1761, 2296, 2348, 2460, 2870, 2935, 3444, 3522, 4109, 4305, 4696, 4920, 5740, 5870, 6888, 7044, 8218, 8610, 8805, 11480, 11740, 12327, 14088, 16436, 17220, 17610, 20545, 23480, 24067, 24654, 32872, 34440, 35220, 41090, 48134, 49308, 61635, 70440, 72201, 82180, 96268, 98616, 120335, 123270, 144402, 164360, 168469, 192536, 240670, 246540, 288804, 336938, 361005, 481340, 493080, 505407, 577608, 673876, 722010, 842345, 962680, 1010814, 1347752, 1444020, 1684690, 2021628, 2527035, 2888040, 3369380, 4043256, 5054070, 6738760, 10108140, 20216280]

約数ペア:

[(1, 20216280), (2, 10108140), (3, 6738760), (4, 5054070), (5, 4043256), (6, 3369380), (7, 2888040), (8, 2527035), (10, 2021628), (12, 1684690), (14, 1444020), (15, 1347752), (20, 1010814), (21, 962680), (24, 842345), (28, 722010), (30, 673876), (35, 577608), (40, 505407), (41, 493080), (42, 481340), (56, 361005), (60, 336938), (70, 288804), (82, 246540), (84, 240670), (105, 192536), (120, 168469), (123, 164360), (140, 144402), (164, 123270), (168, 120335), (205, 98616), (210, 96268), (246, 82180), (280, 72201), (287, 70440), (328, 61635), (410, 49308), (420, 48134), (492, 41090), (574, 35220), (587, 34440), (615, 32872), (820, 24654), (840, 24067), (861, 23480), (984, 20545), (1148, 17610), (1174, 17220), (1230, 16436), (1435, 14088), (1640, 12327), (1722, 11740), (1761, 11480), (2296, 8805), (2348, 8610), (2460, 8218), (2870, 7044), (2935, 6888), (3444, 5870), (3522, 5740), (4109, 4920), (4305, 4696)]