21855120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13009}}^1$

素因数の和:13032

約数の個数: 80

約数和(自身を含む): 77435520

約数和(自身を除く): 55580400

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 13009, 26018, 39027, 52036, 65045, 78054, 91063, 104072, 130090, 156108, 182126, 195135, 208144, 260180, 273189, 312216, 364252, 390270, 455315, 520360, 546378, 624432, 728504, 780540, 910630, 1040720, 1092756, 1365945, 1457008, 1561080, 1821260, 2185512, 2731890, 3122160, 3642520, 4371024, 5463780, 7285040, 10927560, 21855120]

約数ペア:

[(1, 21855120), (2, 10927560), (3, 7285040), (4, 5463780), (5, 4371024), (6, 3642520), (7, 3122160), (8, 2731890), (10, 2185512), (12, 1821260), (14, 1561080), (15, 1457008), (16, 1365945), (20, 1092756), (21, 1040720), (24, 910630), (28, 780540), (30, 728504), (35, 624432), (40, 546378), (42, 520360), (48, 455315), (56, 390270), (60, 364252), (70, 312216), (80, 273189), (84, 260180), (105, 208144), (112, 195135), (120, 182126), (140, 156108), (168, 130090), (210, 104072), (240, 91063), (280, 78054), (336, 65045), (420, 52036), (560, 39027), (840, 26018), (1680, 13009)]