81143940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2777}}^1$

素因数の和:3276

約数の個数: 48

約数和(自身を含む): 227751552

約数和(自身を除く): 146607612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 487, 974, 1461, 1948, 2435, 2777, 2922, 4870, 5554, 5844, 7305, 8331, 9740, 11108, 13885, 14610, 16662, 27770, 29220, 33324, 41655, 55540, 83310, 166620, 1352399, 2704798, 4057197, 5409596, 6761995, 8114394, 13523990, 16228788, 20285985, 27047980, 40571970, 81143940]

約数ペア:

[(1, 81143940), (2, 40571970), (3, 27047980), (4, 20285985), (5, 16228788), (6, 13523990), (10, 8114394), (12, 6761995), (15, 5409596), (20, 4057197), (30, 2704798), (60, 1352399), (487, 166620), (974, 83310), (1461, 55540), (1948, 41655), (2435, 33324), (2777, 29220), (2922, 27770), (4870, 16662), (5554, 14610), (5844, 13885), (7305, 11108), (8331, 9740)]