20390720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{9103}}^1$

素因数の和:9127

約数の個数: 56

約数和(自身を含む): 55497984

約数和(自身を除く): 35107264

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 9103, 18206, 36412, 45515, 63721, 72824, 91030, 127442, 145648, 182060, 254884, 291296, 318605, 364120, 509768, 582592, 637210, 728240, 1019536, 1274420, 1456480, 2039072, 2548840, 2912960, 4078144, 5097680, 10195360, 20390720]

約数ペア:

[(1, 20390720), (2, 10195360), (4, 5097680), (5, 4078144), (7, 2912960), (8, 2548840), (10, 2039072), (14, 1456480), (16, 1274420), (20, 1019536), (28, 728240), (32, 637210), (35, 582592), (40, 509768), (56, 364120), (64, 318605), (70, 291296), (80, 254884), (112, 182060), (140, 145648), (160, 127442), (224, 91030), (280, 72824), (320, 63721), (448, 45515), (560, 36412), (1120, 18206), (2240, 9103)]