19996420

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{571}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 44972928

約数和(自身を除く): 24976508

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 103, 170, 206, 340, 412, 515, 571, 1030, 1142, 1751, 2060, 2284, 2855, 3502, 5710, 7004, 8755, 9707, 11420, 17510, 19414, 35020, 38828, 48535, 58813, 97070, 117626, 194140, 235252, 294065, 588130, 999821, 1176260, 1999642, 3999284, 4999105, 9998210, 19996420]

約数ペア:

[(1, 19996420), (2, 9998210), (4, 4999105), (5, 3999284), (10, 1999642), (17, 1176260), (20, 999821), (34, 588130), (68, 294065), (85, 235252), (103, 194140), (170, 117626), (206, 97070), (340, 58813), (412, 48535), (515, 38828), (571, 35020), (1030, 19414), (1142, 17510), (1751, 11420), (2060, 9707), (2284, 8755), (2855, 7004), (3502, 5710)]