20000628704

素因数分解:

$2^5\times 7^2\times {\mathrm{809}}^1\times {\mathrm{15767}}^1$

素因数の和:16600

約数の個数: 72

約数和(自身を含む): 45864539280

約数和(自身を除く): 25863910576

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 98, 112, 196, 224, 392, 784, 809, 1568, 1618, 3236, 5663, 6472, 11326, 12944, 15767, 22652, 25888, 31534, 39641, 45304, 63068, 79282, 90608, 110369, 126136, 158564, 181216, 220738, 252272, 317128, 441476, 504544, 634256, 772583, 882952, 1268512, 1545166, 1765904, 3090332, 3531808, 6180664, 12361328, 12755503, 24722656, 25511006, 51022012, 89288521, 102044024, 178577042, 204088048, 357154084, 408176096, 625019647, 714308168, 1250039294, 1428616336, 2500078588, 2857232672, 5000157176, 10000314352, 20000628704]

約数ペア:

[(1, 20000628704), (2, 10000314352), (4, 5000157176), (7, 2857232672), (8, 2500078588), (14, 1428616336), (16, 1250039294), (28, 714308168), (32, 625019647), (49, 408176096), (56, 357154084), (98, 204088048), (112, 178577042), (196, 102044024), (224, 89288521), (392, 51022012), (784, 25511006), (809, 24722656), (1568, 12755503), (1618, 12361328), (3236, 6180664), (5663, 3531808), (6472, 3090332), (11326, 1765904), (12944, 1545166), (15767, 1268512), (22652, 882952), (25888, 772583), (31534, 634256), (39641, 504544), (45304, 441476), (63068, 317128), (79282, 252272), (90608, 220738), (110369, 181216), (126136, 158564)]