20889666

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{317}}^1\times {\mathrm{523}}^1$

素因数の和:855

約数の個数: 48

約数和(自身を含む): 51989184

約数和(自身を除く): 31099518

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 317, 523, 634, 951, 1046, 1569, 1902, 2219, 2853, 3138, 3661, 4438, 4707, 5706, 6657, 7322, 9414, 10983, 13314, 19971, 21966, 32949, 39942, 65898, 165791, 331582, 497373, 994746, 1160537, 1492119, 2321074, 2984238, 3481611, 6963222, 10444833, 20889666]

約数ペア:

[(1, 20889666), (2, 10444833), (3, 6963222), (6, 3481611), (7, 2984238), (9, 2321074), (14, 1492119), (18, 1160537), (21, 994746), (42, 497373), (63, 331582), (126, 165791), (317, 65898), (523, 39942), (634, 32949), (951, 21966), (1046, 19971), (1569, 13314), (1902, 10983), (2219, 9414), (2853, 7322), (3138, 6657), (3661, 5706), (4438, 4707)]