21798630

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4943}}^1$

素因数の和:4970

約数の個数: 72

約数和(自身を含む): 65943072

約数和(自身を除く): 44144442

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4943, 9886, 14829, 24715, 29658, 34601, 44487, 49430, 69202, 74145, 88974, 103803, 148290, 173005, 207606, 222435, 242207, 311409, 346010, 444870, 484414, 519015, 622818, 726621, 1038030, 1211035, 1453242, 1557045, 2179863, 2422070, 3114090, 3633105, 4359726, 7266210, 10899315, 21798630]

約数ペア:

[(1, 21798630), (2, 10899315), (3, 7266210), (5, 4359726), (6, 3633105), (7, 3114090), (9, 2422070), (10, 2179863), (14, 1557045), (15, 1453242), (18, 1211035), (21, 1038030), (30, 726621), (35, 622818), (42, 519015), (45, 484414), (49, 444870), (63, 346010), (70, 311409), (90, 242207), (98, 222435), (105, 207606), (126, 173005), (147, 148290), (210, 103803), (245, 88974), (294, 74145), (315, 69202), (441, 49430), (490, 44487), (630, 34601), (735, 29658), (882, 24715), (1470, 14829), (2205, 9886), (4410, 4943)]