20665890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{32803}}^1$

素因数の和:32823

約数の個数: 48

約数和(自身を含む): 61409088

約数和(自身を除く): 40743198

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 32803, 65606, 98409, 164015, 196818, 229621, 295227, 328030, 459242, 492045, 590454, 688863, 984090, 1148105, 1377726, 1476135, 2066589, 2296210, 2952270, 3444315, 4133178, 6888630, 10332945, 20665890]

約数ペア:

[(1, 20665890), (2, 10332945), (3, 6888630), (5, 4133178), (6, 3444315), (7, 2952270), (9, 2296210), (10, 2066589), (14, 1476135), (15, 1377726), (18, 1148105), (21, 984090), (30, 688863), (35, 590454), (42, 492045), (45, 459242), (63, 328030), (70, 295227), (90, 229621), (105, 196818), (126, 164015), (210, 98409), (315, 65606), (630, 32803)]