19400000

素因数分解:

$2^6\times 5^5\times {\mathrm{97}}^1$

素因数の和:134

約数の個数: 84

約数和(自身を含む): 48614076

約数和(自身を除く): 29214076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 97, 100, 125, 160, 194, 200, 250, 320, 388, 400, 485, 500, 625, 776, 800, 970, 1000, 1250, 1552, 1600, 1940, 2000, 2425, 2500, 3104, 3125, 3880, 4000, 4850, 5000, 6208, 6250, 7760, 8000, 9700, 10000, 12125, 12500, 15520, 19400, 20000, 24250, 25000, 31040, 38800, 40000, 48500, 50000, 60625, 77600, 97000, 100000, 121250, 155200, 194000, 200000, 242500, 303125, 388000, 485000, 606250, 776000, 970000, 1212500, 1940000, 2425000, 3880000, 4850000, 9700000, 19400000]

約数ペア:

[(1, 19400000), (2, 9700000), (4, 4850000), (5, 3880000), (8, 2425000), (10, 1940000), (16, 1212500), (20, 970000), (25, 776000), (32, 606250), (40, 485000), (50, 388000), (64, 303125), (80, 242500), (97, 200000), (100, 194000), (125, 155200), (160, 121250), (194, 100000), (200, 97000), (250, 77600), (320, 60625), (388, 50000), (400, 48500), (485, 40000), (500, 38800), (625, 31040), (776, 25000), (800, 24250), (970, 20000), (1000, 19400), (1250, 15520), (1552, 12500), (1600, 12125), (1940, 10000), (2000, 9700), (2425, 8000), (2500, 7760), (3104, 6250), (3125, 6208), (3880, 5000), (4000, 4850)]