19912672

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{317}}^1$

素因数の和:491

約数の個数: 48

約数和(自身を含む): 42632352

約数和(自身を除く): 22719680

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 151, 208, 302, 317, 416, 604, 634, 1208, 1268, 1963, 2416, 2536, 3926, 4121, 4832, 5072, 7852, 8242, 10144, 15704, 16484, 31408, 32968, 47867, 62816, 65936, 95734, 131872, 191468, 382936, 622271, 765872, 1244542, 1531744, 2489084, 4978168, 9956336, 19912672]

約数ペア:

[(1, 19912672), (2, 9956336), (4, 4978168), (8, 2489084), (13, 1531744), (16, 1244542), (26, 765872), (32, 622271), (52, 382936), (104, 191468), (151, 131872), (208, 95734), (302, 65936), (317, 62816), (416, 47867), (604, 32968), (634, 31408), (1208, 16484), (1268, 15704), (1963, 10144), (2416, 8242), (2536, 7852), (3926, 5072), (4121, 4832)]