638803730

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{42221}}^1$

素因数の和:42334

約数の個数: 32

約数和(自身を含む): 1231193520

約数和(自身を除く): 592389790

約数列:

[1, 2, 5, 10, 17, 34, 85, 89, 170, 178, 445, 890, 1513, 3026, 7565, 15130, 42221, 84442, 211105, 422210, 717757, 1435514, 3588785, 3757669, 7177570, 7515338, 18788345, 37576690, 63880373, 127760746, 319401865, 638803730]

約数ペア:

[(1, 638803730), (2, 319401865), (5, 127760746), (10, 63880373), (17, 37576690), (34, 18788345), (85, 7515338), (89, 7177570), (170, 3757669), (178, 3588785), (445, 1435514), (890, 717757), (1513, 422210), (3026, 211105), (7565, 84442), (15130, 42221)]