19714640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:588

約数の個数: 80

約数和(自身を含む): 51264576

約数和(自身を除く): 31549936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 521, 688, 860, 880, 946, 1042, 1720, 1892, 2084, 2365, 2605, 3440, 3784, 4168, 4730, 5210, 5731, 7568, 8336, 9460, 10420, 11462, 18920, 20840, 22403, 22924, 28655, 37840, 41680, 44806, 45848, 57310, 89612, 91696, 112015, 114620, 179224, 224030, 229240, 246433, 358448, 448060, 458480, 492866, 896120, 985732, 1232165, 1792240, 1971464, 2464330, 3942928, 4928660, 9857320, 19714640]

約数ペア:

[(1, 19714640), (2, 9857320), (4, 4928660), (5, 3942928), (8, 2464330), (10, 1971464), (11, 1792240), (16, 1232165), (20, 985732), (22, 896120), (40, 492866), (43, 458480), (44, 448060), (55, 358448), (80, 246433), (86, 229240), (88, 224030), (110, 179224), (172, 114620), (176, 112015), (215, 91696), (220, 89612), (344, 57310), (430, 45848), (440, 44806), (473, 41680), (521, 37840), (688, 28655), (860, 22924), (880, 22403), (946, 20840), (1042, 18920), (1720, 11462), (1892, 10420), (2084, 9460), (2365, 8336), (2605, 7568), (3440, 5731), (3784, 5210), (4168, 4730)]