19736140

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{433}}^1$

素因数の和:538

約数の個数: 48

約数和(自身を含む): 43309728

約数和(自身を除く): 23573588

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 430, 433, 530, 860, 866, 1060, 1732, 2165, 2279, 4330, 4558, 8660, 9116, 11395, 18619, 22790, 22949, 37238, 45580, 45898, 74476, 91796, 93095, 114745, 186190, 229490, 372380, 458980, 986807, 1973614, 3947228, 4934035, 9868070, 19736140]

約数ペア:

[(1, 19736140), (2, 9868070), (4, 4934035), (5, 3947228), (10, 1973614), (20, 986807), (43, 458980), (53, 372380), (86, 229490), (106, 186190), (172, 114745), (212, 93095), (215, 91796), (265, 74476), (430, 45898), (433, 45580), (530, 37238), (860, 22949), (866, 22790), (1060, 18619), (1732, 11395), (2165, 9116), (2279, 8660), (4330, 4558)]