20364520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1493}}^1$

素因数の和:1546

約数の個数: 64

約数和(自身を含む): 51632640

約数和(自身を除く): 31268120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1493, 1705, 2728, 2986, 3410, 5972, 6820, 7465, 11944, 13640, 14930, 16423, 29860, 32846, 46283, 59720, 65692, 82115, 92566, 131384, 164230, 185132, 231415, 328460, 370264, 462830, 509113, 656920, 925660, 1018226, 1851320, 2036452, 2545565, 4072904, 5091130, 10182260, 20364520]

約数ペア:

[(1, 20364520), (2, 10182260), (4, 5091130), (5, 4072904), (8, 2545565), (10, 2036452), (11, 1851320), (20, 1018226), (22, 925660), (31, 656920), (40, 509113), (44, 462830), (55, 370264), (62, 328460), (88, 231415), (110, 185132), (124, 164230), (155, 131384), (220, 92566), (248, 82115), (310, 65692), (341, 59720), (440, 46283), (620, 32846), (682, 29860), (1240, 16423), (1364, 14930), (1493, 13640), (1705, 11944), (2728, 7465), (2986, 6820), (3410, 5972)]