21175182

素因数分解:

$2^1\times 3^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{263}}^1$

素因数の和:355

約数の個数: 80

約数和(自身を含む): 55199232

約数和(自身を除く): 34024050

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 71, 81, 126, 142, 162, 189, 213, 263, 378, 426, 497, 526, 567, 639, 789, 994, 1134, 1278, 1491, 1578, 1841, 1917, 2367, 2982, 3682, 3834, 4473, 4734, 5523, 5751, 7101, 8946, 11046, 11502, 13419, 14202, 16569, 18673, 21303, 26838, 33138, 37346, 40257, 42606, 49707, 56019, 80514, 99414, 112038, 130711, 149121, 168057, 261422, 298242, 336114, 392133, 504171, 784266, 1008342, 1176399, 1512513, 2352798, 3025026, 3529197, 7058394, 10587591, 21175182]

約数ペア:

[(1, 21175182), (2, 10587591), (3, 7058394), (6, 3529197), (7, 3025026), (9, 2352798), (14, 1512513), (18, 1176399), (21, 1008342), (27, 784266), (42, 504171), (54, 392133), (63, 336114), (71, 298242), (81, 261422), (126, 168057), (142, 149121), (162, 130711), (189, 112038), (213, 99414), (263, 80514), (378, 56019), (426, 49707), (497, 42606), (526, 40257), (567, 37346), (639, 33138), (789, 26838), (994, 21303), (1134, 18673), (1278, 16569), (1491, 14202), (1578, 13419), (1841, 11502), (1917, 11046), (2367, 8946), (2982, 7101), (3682, 5751), (3834, 5523), (4473, 4734)]