20917890

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{33203}}^1$

素因数の和:33223

約数の個数: 48

約数和(自身を含む): 62157888

約数和(自身を除く): 41239998

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, 33203, 66406, 99609, 166015, 199218, 232421, 298827, 332030, 464842, 498045, 597654, 697263, 996090, 1162105, 1394526, 1494135, 2091789, 2324210, 2988270, 3486315, 4183578, 6972630, 10458945, 20917890]

約数ペア:

[(1, 20917890), (2, 10458945), (3, 6972630), (5, 4183578), (6, 3486315), (7, 2988270), (9, 2324210), (10, 2091789), (14, 1494135), (15, 1394526), (18, 1162105), (21, 996090), (30, 697263), (35, 597654), (42, 498045), (45, 464842), (63, 332030), (70, 298827), (90, 232421), (105, 199218), (126, 166015), (210, 99609), (315, 66406), (630, 33203)]