21042120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{839}}^1$

素因数の和:883

約数の個数: 128

約数和(自身を含む): 72576000

約数和(自身を除く): 51533880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 33, 38, 40, 44, 55, 57, 60, 66, 76, 88, 95, 110, 114, 120, 132, 152, 165, 190, 209, 220, 228, 264, 285, 330, 380, 418, 440, 456, 570, 627, 660, 760, 836, 839, 1045, 1140, 1254, 1320, 1672, 1678, 2090, 2280, 2508, 2517, 3135, 3356, 4180, 4195, 5016, 5034, 6270, 6712, 8360, 8390, 9229, 10068, 12540, 12585, 15941, 16780, 18458, 20136, 25080, 25170, 27687, 31882, 33560, 36916, 46145, 47823, 50340, 55374, 63764, 73832, 79705, 92290, 95646, 100680, 110748, 127528, 138435, 159410, 175351, 184580, 191292, 221496, 239115, 276870, 318820, 350702, 369160, 382584, 478230, 526053, 553740, 637640, 701404, 876755, 956460, 1052106, 1107480, 1402808, 1753510, 1912920, 2104212, 2630265, 3507020, 4208424, 5260530, 7014040, 10521060, 21042120]

約数ペア:

[(1, 21042120), (2, 10521060), (3, 7014040), (4, 5260530), (5, 4208424), (6, 3507020), (8, 2630265), (10, 2104212), (11, 1912920), (12, 1753510), (15, 1402808), (19, 1107480), (20, 1052106), (22, 956460), (24, 876755), (30, 701404), (33, 637640), (38, 553740), (40, 526053), (44, 478230), (55, 382584), (57, 369160), (60, 350702), (66, 318820), (76, 276870), (88, 239115), (95, 221496), (110, 191292), (114, 184580), (120, 175351), (132, 159410), (152, 138435), (165, 127528), (190, 110748), (209, 100680), (220, 95646), (228, 92290), (264, 79705), (285, 73832), (330, 63764), (380, 55374), (418, 50340), (440, 47823), (456, 46145), (570, 36916), (627, 33560), (660, 31882), (760, 27687), (836, 25170), (839, 25080), (1045, 20136), (1140, 18458), (1254, 16780), (1320, 15941), (1672, 12585), (1678, 12540), (2090, 10068), (2280, 9229), (2508, 8390), (2517, 8360), (3135, 6712), (3356, 6270), (4180, 5034), (4195, 5016)]