21181230

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1601}}^1$

素因数の和:1631

約数の個数: 96

約数和(自身を含む): 65746080

約数和(自身を除く): 44564850

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1601, 1890, 2205, 2646, 3202, 4410, 4803, 6615, 8005, 9606, 11207, 13230, 14409, 16010, 22414, 24015, 28818, 33621, 43227, 48030, 56035, 67242, 72045, 78449, 86454, 100863, 112070, 144090, 156898, 168105, 201726, 216135, 235347, 302589, 336210, 392245, 432270, 470694, 504315, 605178, 706041, 784490, 1008630, 1176735, 1412082, 1512945, 2118123, 2353470, 3025890, 3530205, 4236246, 7060410, 10590615, 21181230]

約数ペア:

[(1, 21181230), (2, 10590615), (3, 7060410), (5, 4236246), (6, 3530205), (7, 3025890), (9, 2353470), (10, 2118123), (14, 1512945), (15, 1412082), (18, 1176735), (21, 1008630), (27, 784490), (30, 706041), (35, 605178), (42, 504315), (45, 470694), (49, 432270), (54, 392245), (63, 336210), (70, 302589), (90, 235347), (98, 216135), (105, 201726), (126, 168105), (135, 156898), (147, 144090), (189, 112070), (210, 100863), (245, 86454), (270, 78449), (294, 72045), (315, 67242), (378, 56035), (441, 48030), (490, 43227), (630, 33621), (735, 28818), (882, 24015), (945, 22414), (1323, 16010), (1470, 14409), (1601, 13230), (1890, 11207), (2205, 9606), (2646, 8005), (3202, 6615), (4410, 4803)]