20161789420

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1\times {\mathrm{98939}}^1$

素因数の和:99414

約数の個数: 48

約数和(自身を含む): 44280794880

約数和(自身を除く): 24119005460

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 443, 460, 886, 1772, 2215, 4430, 8860, 10189, 20378, 40756, 50945, 98939, 101890, 197878, 203780, 395756, 494695, 989390, 1978780, 2275597, 4551194, 9102388, 11377985, 22755970, 43829977, 45511940, 87659954, 175319908, 219149885, 438299770, 876599540, 1008089471, 2016178942, 4032357884, 5040447355, 10080894710, 20161789420]

約数ペア:

[(1, 20161789420), (2, 10080894710), (4, 5040447355), (5, 4032357884), (10, 2016178942), (20, 1008089471), (23, 876599540), (46, 438299770), (92, 219149885), (115, 175319908), (230, 87659954), (443, 45511940), (460, 43829977), (886, 22755970), (1772, 11377985), (2215, 9102388), (4430, 4551194), (8860, 2275597), (10189, 1978780), (20378, 989390), (40756, 494695), (50945, 395756), (98939, 203780), (101890, 197878)]