21678720

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{1613}}^1$

素因数の和:1642

約数の個数: 128

約数和(自身を含む): 79021440

約数和(自身を除く): 57342720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1613, 1680, 1920, 2240, 2688, 3226, 3360, 4480, 4839, 6452, 6720, 8065, 9678, 11291, 12904, 13440, 16130, 19356, 22582, 24195, 25808, 32260, 33873, 38712, 45164, 48390, 51616, 56455, 64520, 67746, 77424, 90328, 96780, 103232, 112910, 129040, 135492, 154848, 169365, 180656, 193560, 206464, 225820, 258080, 270984, 309696, 338730, 361312, 387120, 451640, 516160, 541968, 619392, 677460, 722624, 774240, 903280, 1032320, 1083936, 1354920, 1445248, 1548480, 1806560, 2167872, 2709840, 3096960, 3613120, 4335744, 5419680, 7226240, 10839360, 21678720]

約数ペア:

[(1, 21678720), (2, 10839360), (3, 7226240), (4, 5419680), (5, 4335744), (6, 3613120), (7, 3096960), (8, 2709840), (10, 2167872), (12, 1806560), (14, 1548480), (15, 1445248), (16, 1354920), (20, 1083936), (21, 1032320), (24, 903280), (28, 774240), (30, 722624), (32, 677460), (35, 619392), (40, 541968), (42, 516160), (48, 451640), (56, 387120), (60, 361312), (64, 338730), (70, 309696), (80, 270984), (84, 258080), (96, 225820), (105, 206464), (112, 193560), (120, 180656), (128, 169365), (140, 154848), (160, 135492), (168, 129040), (192, 112910), (210, 103232), (224, 96780), (240, 90328), (280, 77424), (320, 67746), (336, 64520), (384, 56455), (420, 51616), (448, 48390), (480, 45164), (560, 38712), (640, 33873), (672, 32260), (840, 25808), (896, 24195), (960, 22582), (1120, 19356), (1344, 16130), (1613, 13440), (1680, 12904), (1920, 11291), (2240, 9678), (2688, 8065), (3226, 6720), (3360, 6452), (4480, 4839)]