20921030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{6997}}^1$

素因数の和:7040

約数の個数: 32

約数和(自身を含む): 42323904

約数和(自身を除く): 21402874

約数列:

[1, 2, 5, 10, 13, 23, 26, 46, 65, 115, 130, 230, 299, 598, 1495, 2990, 6997, 13994, 34985, 69970, 90961, 160931, 181922, 321862, 454805, 804655, 909610, 1609310, 2092103, 4184206, 10460515, 20921030]

約数ペア:

[(1, 20921030), (2, 10460515), (5, 4184206), (10, 2092103), (13, 1609310), (23, 909610), (26, 804655), (46, 454805), (65, 321862), (115, 181922), (130, 160931), (230, 90961), (299, 69970), (598, 34985), (1495, 13994), (2990, 6997)]