89891780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4591}}^1$

素因数の和:4700

約数の個数: 48

約数和(自身を含む): 208293120

約数和(自身を除く): 118401340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4591, 4895, 9182, 9790, 18364, 19580, 22955, 45910, 50501, 91820, 101002, 202004, 252505, 408599, 505010, 817198, 1010020, 1634396, 2042995, 4085990, 4494589, 8171980, 8989178, 17978356, 22472945, 44945890, 89891780]

約数ペア:

[(1, 89891780), (2, 44945890), (4, 22472945), (5, 17978356), (10, 8989178), (11, 8171980), (20, 4494589), (22, 4085990), (44, 2042995), (55, 1634396), (89, 1010020), (110, 817198), (178, 505010), (220, 408599), (356, 252505), (445, 202004), (890, 101002), (979, 91820), (1780, 50501), (1958, 45910), (3916, 22955), (4591, 19580), (4895, 18364), (9182, 9790)]