161718440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{310997}}^1$

素因数の和:311021

約数の個数: 32

約数和(自身を含む): 391857480

約数和(自身を除く): 230139040

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 310997, 621994, 1243988, 1554985, 2487976, 3109970, 4042961, 6219940, 8085922, 12439880, 16171844, 20214805, 32343688, 40429610, 80859220, 161718440]

約数ペア:

[(1, 161718440), (2, 80859220), (4, 40429610), (5, 32343688), (8, 20214805), (10, 16171844), (13, 12439880), (20, 8085922), (26, 6219940), (40, 4042961), (52, 3109970), (65, 2487976), (104, 1554985), (130, 1243988), (260, 621994), (520, 310997)]