28400020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{167}}^1\times {\mathrm{773}}^1$

素因数の和:960

約数の個数: 48

約数和(自身を含む): 65536128

約数和(自身を除く): 37136108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 167, 220, 334, 668, 773, 835, 1546, 1670, 1837, 3092, 3340, 3674, 3865, 7348, 7730, 8503, 9185, 15460, 17006, 18370, 34012, 36740, 42515, 85030, 129091, 170060, 258182, 516364, 645455, 1290910, 1420001, 2581820, 2840002, 5680004, 7100005, 14200010, 28400020]

約数ペア:

[(1, 28400020), (2, 14200010), (4, 7100005), (5, 5680004), (10, 2840002), (11, 2581820), (20, 1420001), (22, 1290910), (44, 645455), (55, 516364), (110, 258182), (167, 170060), (220, 129091), (334, 85030), (668, 42515), (773, 36740), (835, 34012), (1546, 18370), (1670, 17006), (1837, 15460), (3092, 9185), (3340, 8503), (3674, 7730), (3865, 7348)]