20651520

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2689}}^1$

素因数の和:2715

約数の個数: 80

約数和(自身を含む): 66044880

約数和(自身を除く): 45393360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2689, 3840, 5378, 7680, 8067, 10756, 13445, 16134, 21512, 26890, 32268, 40335, 43024, 53780, 64536, 80670, 86048, 107560, 129072, 161340, 172096, 215120, 258144, 322680, 344192, 430240, 516288, 645360, 688384, 860480, 1032576, 1290720, 1376768, 1720960, 2065152, 2581440, 3441920, 4130304, 5162880, 6883840, 10325760, 20651520]

約数ペア:

[(1, 20651520), (2, 10325760), (3, 6883840), (4, 5162880), (5, 4130304), (6, 3441920), (8, 2581440), (10, 2065152), (12, 1720960), (15, 1376768), (16, 1290720), (20, 1032576), (24, 860480), (30, 688384), (32, 645360), (40, 516288), (48, 430240), (60, 344192), (64, 322680), (80, 258144), (96, 215120), (120, 172096), (128, 161340), (160, 129072), (192, 107560), (240, 86048), (256, 80670), (320, 64536), (384, 53780), (480, 43024), (512, 40335), (640, 32268), (768, 26890), (960, 21512), (1280, 16134), (1536, 13445), (1920, 10756), (2560, 8067), (2689, 7680), (3840, 5378)]