19690400

素因数分解:

$2^5\times 5^2\times {\mathrm{151}}^1\times {\mathrm{163}}^1$

素因数の和:334

約数の個数: 72

約数和(自身を含む): 48684384

約数和(自身を除く): 28993984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 151, 160, 163, 200, 302, 326, 400, 604, 652, 755, 800, 815, 1208, 1304, 1510, 1630, 2416, 2608, 3020, 3260, 3775, 4075, 4832, 5216, 6040, 6520, 7550, 8150, 12080, 13040, 15100, 16300, 24160, 24613, 26080, 30200, 32600, 49226, 60400, 65200, 98452, 120800, 123065, 130400, 196904, 246130, 393808, 492260, 615325, 787616, 984520, 1230650, 1969040, 2461300, 3938080, 4922600, 9845200, 19690400]

約数ペア:

[(1, 19690400), (2, 9845200), (4, 4922600), (5, 3938080), (8, 2461300), (10, 1969040), (16, 1230650), (20, 984520), (25, 787616), (32, 615325), (40, 492260), (50, 393808), (80, 246130), (100, 196904), (151, 130400), (160, 123065), (163, 120800), (200, 98452), (302, 65200), (326, 60400), (400, 49226), (604, 32600), (652, 30200), (755, 26080), (800, 24613), (815, 24160), (1208, 16300), (1304, 15100), (1510, 13040), (1630, 12080), (2416, 8150), (2608, 7550), (3020, 6520), (3260, 6040), (3775, 5216), (4075, 4832)]