19378640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14249}}^1$

素因数の和:14279

約数の個数: 40

約数和(自身を含む): 47709000

約数和(自身を除く): 28330360

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14249, 28498, 56996, 71245, 113992, 142490, 227984, 242233, 284980, 484466, 569960, 968932, 1139920, 1211165, 1937864, 2422330, 3875728, 4844660, 9689320, 19378640]

約数ペア:

[(1, 19378640), (2, 9689320), (4, 4844660), (5, 3875728), (8, 2422330), (10, 1937864), (16, 1211165), (17, 1139920), (20, 968932), (34, 569960), (40, 484466), (68, 284980), (80, 242233), (85, 227984), (136, 142490), (170, 113992), (272, 71245), (340, 56996), (680, 28498), (1360, 14249)]