638589280

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{19661}}^1$

素因数の和:19712

約数の個数: 96

約数和(自身を含む): 1783736640

約数和(自身を除く): 1145147360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 406, 464, 560, 580, 812, 928, 1015, 1120, 1160, 1624, 2030, 2320, 3248, 4060, 4640, 6496, 8120, 16240, 19661, 32480, 39322, 78644, 98305, 137627, 157288, 196610, 275254, 314576, 393220, 550508, 570169, 629152, 688135, 786440, 1101016, 1140338, 1376270, 1572880, 2202032, 2280676, 2752540, 2850845, 3145760, 3991183, 4404064, 4561352, 5505080, 5701690, 7982366, 9122704, 11010160, 11403380, 15964732, 18245408, 19955915, 22020320, 22806760, 31929464, 39911830, 45613520, 63858928, 79823660, 91227040, 127717856, 159647320, 319294640, 638589280]

約数ペア:

[(1, 638589280), (2, 319294640), (4, 159647320), (5, 127717856), (7, 91227040), (8, 79823660), (10, 63858928), (14, 45613520), (16, 39911830), (20, 31929464), (28, 22806760), (29, 22020320), (32, 19955915), (35, 18245408), (40, 15964732), (56, 11403380), (58, 11010160), (70, 9122704), (80, 7982366), (112, 5701690), (116, 5505080), (140, 4561352), (145, 4404064), (160, 3991183), (203, 3145760), (224, 2850845), (232, 2752540), (280, 2280676), (290, 2202032), (406, 1572880), (464, 1376270), (560, 1140338), (580, 1101016), (812, 786440), (928, 688135), (1015, 629152), (1120, 570169), (1160, 550508), (1624, 393220), (2030, 314576), (2320, 275254), (3248, 196610), (4060, 157288), (4640, 137627), (6496, 98305), (8120, 78644), (16240, 39322), (19661, 32480)]