20789860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11423}}^1$

素因数の和:11452

約数の個数: 48

約数和(自身を含む): 53738496

約数和(自身を除く): 32948636

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11423, 22846, 45692, 57115, 79961, 114230, 148499, 159922, 228460, 296998, 319844, 399805, 593996, 742495, 799610, 1039493, 1484990, 1599220, 2078986, 2969980, 4157972, 5197465, 10394930, 20789860]

約数ペア:

[(1, 20789860), (2, 10394930), (4, 5197465), (5, 4157972), (7, 2969980), (10, 2078986), (13, 1599220), (14, 1484990), (20, 1039493), (26, 799610), (28, 742495), (35, 593996), (52, 399805), (65, 319844), (70, 296998), (91, 228460), (130, 159922), (140, 148499), (182, 114230), (260, 79961), (364, 57115), (455, 45692), (910, 22846), (1820, 11423)]