28493440

素因数分解:

$2^7\times 5^1\times {\mathrm{211}}^2$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 68441490

約数和(自身を除く): 39948050

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 320, 422, 640, 844, 1055, 1688, 2110, 3376, 4220, 6752, 8440, 13504, 16880, 27008, 33760, 44521, 67520, 89042, 135040, 178084, 222605, 356168, 445210, 712336, 890420, 1424672, 1780840, 2849344, 3561680, 5698688, 7123360, 14246720, 28493440]

約数ペア:

[(1, 28493440), (2, 14246720), (4, 7123360), (5, 5698688), (8, 3561680), (10, 2849344), (16, 1780840), (20, 1424672), (32, 890420), (40, 712336), (64, 445210), (80, 356168), (128, 222605), (160, 178084), (211, 135040), (320, 89042), (422, 67520), (640, 44521), (844, 33760), (1055, 27008), (1688, 16880), (2110, 13504), (3376, 8440), (4220, 6752)]