21679980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1259}}^1$

素因数の和:1319

約数の個数: 96

約数和(自身を含む): 71124480

約数和(自身を除く): 49444500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 41, 42, 60, 70, 82, 84, 105, 123, 140, 164, 205, 210, 246, 287, 410, 420, 492, 574, 615, 820, 861, 1148, 1230, 1259, 1435, 1722, 2460, 2518, 2870, 3444, 3777, 4305, 5036, 5740, 6295, 7554, 8610, 8813, 12590, 15108, 17220, 17626, 18885, 25180, 26439, 35252, 37770, 44065, 51619, 52878, 75540, 88130, 103238, 105756, 132195, 154857, 176260, 206476, 258095, 264390, 309714, 361333, 516190, 528780, 619428, 722666, 774285, 1032380, 1083999, 1445332, 1548570, 1806665, 2167998, 3097140, 3613330, 4335996, 5419995, 7226660, 10839990, 21679980]

約数ペア:

[(1, 21679980), (2, 10839990), (3, 7226660), (4, 5419995), (5, 4335996), (6, 3613330), (7, 3097140), (10, 2167998), (12, 1806665), (14, 1548570), (15, 1445332), (20, 1083999), (21, 1032380), (28, 774285), (30, 722666), (35, 619428), (41, 528780), (42, 516190), (60, 361333), (70, 309714), (82, 264390), (84, 258095), (105, 206476), (123, 176260), (140, 154857), (164, 132195), (205, 105756), (210, 103238), (246, 88130), (287, 75540), (410, 52878), (420, 51619), (492, 44065), (574, 37770), (615, 35252), (820, 26439), (861, 25180), (1148, 18885), (1230, 17626), (1259, 17220), (1435, 15108), (1722, 12590), (2460, 8813), (2518, 8610), (2870, 7554), (3444, 6295), (3777, 5740), (4305, 5036)]