20874960

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{367}}^1$

素因数の和:465

約数の個数: 120

約数和(自身を含む): 71185920

約数和(自身を除く): 50310960

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 79, 80, 90, 120, 144, 158, 180, 237, 240, 316, 360, 367, 395, 474, 632, 711, 720, 734, 790, 948, 1101, 1185, 1264, 1422, 1468, 1580, 1835, 1896, 2202, 2370, 2844, 2936, 3160, 3303, 3555, 3670, 3792, 4404, 4740, 5505, 5688, 5872, 6320, 6606, 7110, 7340, 8808, 9480, 11010, 11376, 13212, 14220, 14680, 16515, 17616, 18960, 22020, 26424, 28440, 28993, 29360, 33030, 44040, 52848, 56880, 57986, 66060, 86979, 88080, 115972, 132120, 144965, 173958, 231944, 260937, 264240, 289930, 347916, 434895, 463888, 521874, 579860, 695832, 869790, 1043748, 1159720, 1304685, 1391664, 1739580, 2087496, 2319440, 2609370, 3479160, 4174992, 5218740, 6958320, 10437480, 20874960]

約数ペア:

[(1, 20874960), (2, 10437480), (3, 6958320), (4, 5218740), (5, 4174992), (6, 3479160), (8, 2609370), (9, 2319440), (10, 2087496), (12, 1739580), (15, 1391664), (16, 1304685), (18, 1159720), (20, 1043748), (24, 869790), (30, 695832), (36, 579860), (40, 521874), (45, 463888), (48, 434895), (60, 347916), (72, 289930), (79, 264240), (80, 260937), (90, 231944), (120, 173958), (144, 144965), (158, 132120), (180, 115972), (237, 88080), (240, 86979), (316, 66060), (360, 57986), (367, 56880), (395, 52848), (474, 44040), (632, 33030), (711, 29360), (720, 28993), (734, 28440), (790, 26424), (948, 22020), (1101, 18960), (1185, 17616), (1264, 16515), (1422, 14680), (1468, 14220), (1580, 13212), (1835, 11376), (1896, 11010), (2202, 9480), (2370, 8808), (2844, 7340), (2936, 7110), (3160, 6606), (3303, 6320), (3555, 5872), (3670, 5688), (3792, 5505), (4404, 4740)]