19767580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{877}}^1$

素因数の和:923

約数の個数: 72

約数和(自身を含む): 50446368

約数和(自身を除く): 30678788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 49, 70, 92, 98, 115, 140, 161, 196, 230, 245, 322, 460, 490, 644, 805, 877, 980, 1127, 1610, 1754, 2254, 3220, 3508, 4385, 4508, 5635, 6139, 8770, 11270, 12278, 17540, 20171, 22540, 24556, 30695, 40342, 42973, 61390, 80684, 85946, 100855, 122780, 141197, 171892, 201710, 214865, 282394, 403420, 429730, 564788, 705985, 859460, 988379, 1411970, 1976758, 2823940, 3953516, 4941895, 9883790, 19767580]

約数ペア:

[(1, 19767580), (2, 9883790), (4, 4941895), (5, 3953516), (7, 2823940), (10, 1976758), (14, 1411970), (20, 988379), (23, 859460), (28, 705985), (35, 564788), (46, 429730), (49, 403420), (70, 282394), (92, 214865), (98, 201710), (115, 171892), (140, 141197), (161, 122780), (196, 100855), (230, 85946), (245, 80684), (322, 61390), (460, 42973), (490, 40342), (644, 30695), (805, 24556), (877, 22540), (980, 20171), (1127, 17540), (1610, 12278), (1754, 11270), (2254, 8770), (3220, 6139), (3508, 5635), (4385, 4508)]