19659940

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{541}}^1$

素因数の和:652

約数の個数: 48

約数和(自身を含む): 43706880

約数和(自身を除く): 24046940

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 79, 92, 115, 158, 230, 316, 395, 460, 541, 790, 1082, 1580, 1817, 2164, 2705, 3634, 5410, 7268, 9085, 10820, 12443, 18170, 24886, 36340, 42739, 49772, 62215, 85478, 124430, 170956, 213695, 248860, 427390, 854780, 982997, 1965994, 3931988, 4914985, 9829970, 19659940]

約数ペア:

[(1, 19659940), (2, 9829970), (4, 4914985), (5, 3931988), (10, 1965994), (20, 982997), (23, 854780), (46, 427390), (79, 248860), (92, 213695), (115, 170956), (158, 124430), (230, 85478), (316, 62215), (395, 49772), (460, 42739), (541, 36340), (790, 24886), (1082, 18170), (1580, 12443), (1817, 10820), (2164, 9085), (2705, 7268), (3634, 5410)]