90405680

素因数分解:

$2^4\times 5^1\times {\mathrm{1019}}^1\times {\mathrm{1109}}^1$

素因数の和:2141

約数の個数: 40

約数和(自身を含む): 210589200

約数和(自身を除く): 120183520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1019, 1109, 2038, 2218, 4076, 4436, 5095, 5545, 8152, 8872, 10190, 11090, 16304, 17744, 20380, 22180, 40760, 44360, 81520, 88720, 1130071, 2260142, 4520284, 5650355, 9040568, 11300710, 18081136, 22601420, 45202840, 90405680]

約数ペア:

[(1, 90405680), (2, 45202840), (4, 22601420), (5, 18081136), (8, 11300710), (10, 9040568), (16, 5650355), (20, 4520284), (40, 2260142), (80, 1130071), (1019, 88720), (1109, 81520), (2038, 44360), (2218, 40760), (4076, 22180), (4436, 20380), (5095, 17744), (5545, 16304), (8152, 11090), (8872, 10190)]