20459840

素因数分解:

$2^6\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3761}}^1$

素因数の和:3795

約数の個数: 56

約数和(自身を含む): 51599592

約数和(自身を除く): 31139752

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 136, 160, 170, 272, 320, 340, 544, 680, 1088, 1360, 2720, 3761, 5440, 7522, 15044, 18805, 30088, 37610, 60176, 63937, 75220, 120352, 127874, 150440, 240704, 255748, 300880, 319685, 511496, 601760, 639370, 1022992, 1203520, 1278740, 2045984, 2557480, 4091968, 5114960, 10229920, 20459840]

約数ペア:

[(1, 20459840), (2, 10229920), (4, 5114960), (5, 4091968), (8, 2557480), (10, 2045984), (16, 1278740), (17, 1203520), (20, 1022992), (32, 639370), (34, 601760), (40, 511496), (64, 319685), (68, 300880), (80, 255748), (85, 240704), (136, 150440), (160, 127874), (170, 120352), (272, 75220), (320, 63937), (340, 60176), (544, 37610), (680, 30088), (1088, 18805), (1360, 15044), (2720, 7522), (3761, 5440)]