21008640

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{5471}}^1$

素因数の和:5495

約数の個数: 72

約数和(自身を含む): 67108608

約数和(自身を除く): 46099968

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, 640, 768, 960, 1280, 1920, 3840, 5471, 10942, 16413, 21884, 27355, 32826, 43768, 54710, 65652, 82065, 87536, 109420, 131304, 164130, 175072, 218840, 262608, 328260, 350144, 437680, 525216, 656520, 700288, 875360, 1050432, 1313040, 1400576, 1750720, 2100864, 2626080, 3501440, 4201728, 5252160, 7002880, 10504320, 21008640]

約数ペア:

[(1, 21008640), (2, 10504320), (3, 7002880), (4, 5252160), (5, 4201728), (6, 3501440), (8, 2626080), (10, 2100864), (12, 1750720), (15, 1400576), (16, 1313040), (20, 1050432), (24, 875360), (30, 700288), (32, 656520), (40, 525216), (48, 437680), (60, 350144), (64, 328260), (80, 262608), (96, 218840), (120, 175072), (128, 164130), (160, 131304), (192, 109420), (240, 87536), (256, 82065), (320, 65652), (384, 54710), (480, 43768), (640, 32826), (768, 27355), (960, 21884), (1280, 16413), (1920, 10942), (3840, 5471)]