20368144

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:619

約数の個数: 40

約数和(自身を含む): 41169240

約数和(自身を除く): 20801096

約数列:

[1, 2, 4, 8, 16, 41, 61, 82, 122, 164, 244, 328, 488, 509, 656, 976, 1018, 2036, 2501, 4072, 5002, 8144, 10004, 20008, 20869, 31049, 40016, 41738, 62098, 83476, 124196, 166952, 248392, 333904, 496784, 1273009, 2546018, 5092036, 10184072, 20368144]

約数ペア:

[(1, 20368144), (2, 10184072), (4, 5092036), (8, 2546018), (16, 1273009), (41, 496784), (61, 333904), (82, 248392), (122, 166952), (164, 124196), (244, 83476), (328, 62098), (488, 41738), (509, 40016), (656, 31049), (976, 20869), (1018, 20008), (2036, 10004), (2501, 8144), (4072, 5002)]