18978360

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1777}}^1$

素因数の和:1880

約数の個数: 64

約数和(自身を含む): 57607200

約数和(自身を除く): 38628840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 89, 120, 178, 267, 356, 445, 534, 712, 890, 1068, 1335, 1777, 1780, 2136, 2670, 3554, 3560, 5331, 5340, 7108, 8885, 10662, 10680, 14216, 17770, 21324, 26655, 35540, 42648, 53310, 71080, 106620, 158153, 213240, 316306, 474459, 632612, 790765, 948918, 1265224, 1581530, 1897836, 2372295, 3163060, 3795672, 4744590, 6326120, 9489180, 18978360]

約数ペア:

[(1, 18978360), (2, 9489180), (3, 6326120), (4, 4744590), (5, 3795672), (6, 3163060), (8, 2372295), (10, 1897836), (12, 1581530), (15, 1265224), (20, 948918), (24, 790765), (30, 632612), (40, 474459), (60, 316306), (89, 213240), (120, 158153), (178, 106620), (267, 71080), (356, 53310), (445, 42648), (534, 35540), (712, 26655), (890, 21324), (1068, 17770), (1335, 14216), (1777, 10680), (1780, 10662), (2136, 8885), (2670, 7108), (3554, 5340), (3560, 5331)]