19689950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{557}}^1$

素因数の和:677

約数の個数: 48

約数和(自身を含む): 42345504

約数和(自身を除く): 22655554

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 101, 175, 202, 350, 505, 557, 707, 1010, 1114, 1414, 2525, 2785, 3535, 3899, 5050, 5570, 7070, 7798, 13925, 17675, 19495, 27850, 35350, 38990, 56257, 97475, 112514, 194950, 281285, 393799, 562570, 787598, 1406425, 1968995, 2812850, 3937990, 9844975, 19689950]

約数ペア:

[(1, 19689950), (2, 9844975), (5, 3937990), (7, 2812850), (10, 1968995), (14, 1406425), (25, 787598), (35, 562570), (50, 393799), (70, 281285), (101, 194950), (175, 112514), (202, 97475), (350, 56257), (505, 38990), (557, 35350), (707, 27850), (1010, 19495), (1114, 17675), (1414, 13925), (2525, 7798), (2785, 7070), (3535, 5570), (3899, 5050)]