21171960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2557}}^1$

素因数の和:2597

約数の個数: 96

約数和(自身を含む): 71828640

約数和(自身を除く): 50656680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 30, 36, 40, 45, 46, 60, 69, 72, 90, 92, 115, 120, 138, 180, 184, 207, 230, 276, 345, 360, 414, 460, 552, 690, 828, 920, 1035, 1380, 1656, 2070, 2557, 2760, 4140, 5114, 7671, 8280, 10228, 12785, 15342, 20456, 23013, 25570, 30684, 38355, 46026, 51140, 58811, 61368, 76710, 92052, 102280, 115065, 117622, 153420, 176433, 184104, 230130, 235244, 294055, 306840, 352866, 460260, 470488, 529299, 588110, 705732, 882165, 920520, 1058598, 1176220, 1411464, 1764330, 2117196, 2352440, 2646495, 3528660, 4234392, 5292990, 7057320, 10585980, 21171960]

約数ペア:

[(1, 21171960), (2, 10585980), (3, 7057320), (4, 5292990), (5, 4234392), (6, 3528660), (8, 2646495), (9, 2352440), (10, 2117196), (12, 1764330), (15, 1411464), (18, 1176220), (20, 1058598), (23, 920520), (24, 882165), (30, 705732), (36, 588110), (40, 529299), (45, 470488), (46, 460260), (60, 352866), (69, 306840), (72, 294055), (90, 235244), (92, 230130), (115, 184104), (120, 176433), (138, 153420), (180, 117622), (184, 115065), (207, 102280), (230, 92052), (276, 76710), (345, 61368), (360, 58811), (414, 51140), (460, 46026), (552, 38355), (690, 30684), (828, 25570), (920, 23013), (1035, 20456), (1380, 15342), (1656, 12785), (2070, 10228), (2557, 8280), (2760, 7671), (4140, 5114)]