19463440

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1091}}^1$

素因数の和:1327

約数の個数: 40

約数和(自身を含む): 45497088

約数和(自身を除く): 26033648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1091, 1115, 1784, 2182, 2230, 3568, 4364, 4460, 5455, 8728, 8920, 10910, 17456, 17840, 21820, 43640, 87280, 243293, 486586, 973172, 1216465, 1946344, 2432930, 3892688, 4865860, 9731720, 19463440]

約数ペア:

[(1, 19463440), (2, 9731720), (4, 4865860), (5, 3892688), (8, 2432930), (10, 1946344), (16, 1216465), (20, 973172), (40, 486586), (80, 243293), (223, 87280), (446, 43640), (892, 21820), (1091, 17840), (1115, 17456), (1784, 10910), (2182, 8920), (2230, 8728), (3568, 5455), (4364, 4460)]