5501980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 12791520

約数和(自身を除く): 7289540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 281, 356, 445, 562, 890, 979, 1124, 1405, 1780, 1958, 2810, 3091, 3916, 4895, 5620, 6182, 9790, 12364, 15455, 19580, 25009, 30910, 50018, 61820, 100036, 125045, 250090, 275099, 500180, 550198, 1100396, 1375495, 2750990, 5501980]

約数ペア:

[(1, 5501980), (2, 2750990), (4, 1375495), (5, 1100396), (10, 550198), (11, 500180), (20, 275099), (22, 250090), (44, 125045), (55, 100036), (89, 61820), (110, 50018), (178, 30910), (220, 25009), (281, 19580), (356, 15455), (445, 12364), (562, 9790), (890, 6182), (979, 5620), (1124, 4895), (1405, 3916), (1780, 3091), (1958, 2810)]