20727882

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:424

約数の個数: 72

約数和(自身を含む): 53138592

約数和(自身を除く): 32410710

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 71, 98, 126, 142, 147, 213, 294, 331, 426, 441, 497, 639, 662, 882, 993, 994, 1278, 1491, 1986, 2317, 2979, 2982, 3479, 4473, 4634, 5958, 6951, 6958, 8946, 10437, 13902, 16219, 20853, 20874, 23501, 31311, 32438, 41706, 47002, 48657, 62622, 70503, 97314, 141006, 145971, 164507, 211509, 291942, 329014, 423018, 493521, 987042, 1151549, 1480563, 2303098, 2961126, 3454647, 6909294, 10363941, 20727882]

約数ペア:

[(1, 20727882), (2, 10363941), (3, 6909294), (6, 3454647), (7, 2961126), (9, 2303098), (14, 1480563), (18, 1151549), (21, 987042), (42, 493521), (49, 423018), (63, 329014), (71, 291942), (98, 211509), (126, 164507), (142, 145971), (147, 141006), (213, 97314), (294, 70503), (331, 62622), (426, 48657), (441, 47002), (497, 41706), (639, 32438), (662, 31311), (882, 23501), (993, 20874), (994, 20853), (1278, 16219), (1491, 13902), (1986, 10437), (2317, 8946), (2979, 6958), (2982, 6951), (3479, 5958), (4473, 4634)]