20662280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{607}}^1$

素因数の和:678

約数の個数: 64

約数和(自身を含む): 49904640

約数和(自身を除く): 29242360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 607, 740, 851, 920, 1214, 1480, 1702, 2428, 3035, 3404, 4255, 4856, 6070, 6808, 8510, 12140, 13961, 17020, 22459, 24280, 27922, 34040, 44918, 55844, 69805, 89836, 111688, 112295, 139610, 179672, 224590, 279220, 449180, 516557, 558440, 898360, 1033114, 2066228, 2582785, 4132456, 5165570, 10331140, 20662280]

約数ペア:

[(1, 20662280), (2, 10331140), (4, 5165570), (5, 4132456), (8, 2582785), (10, 2066228), (20, 1033114), (23, 898360), (37, 558440), (40, 516557), (46, 449180), (74, 279220), (92, 224590), (115, 179672), (148, 139610), (184, 112295), (185, 111688), (230, 89836), (296, 69805), (370, 55844), (460, 44918), (607, 34040), (740, 27922), (851, 24280), (920, 22459), (1214, 17020), (1480, 13961), (1702, 12140), (2428, 8510), (3035, 6808), (3404, 6070), (4255, 4856)]