281320020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{520963}}^1$

素因数の和:520981

約数の個数: 48

約数和(自身を含む): 875219520

約数和(自身を除く): 593899500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 520963, 1041926, 1562889, 2083852, 2604815, 3125778, 4688667, 5209630, 6251556, 7814445, 9377334, 10419260, 14066001, 15628890, 18754668, 23443335, 28132002, 31257780, 46886670, 56264004, 70330005, 93773340, 140660010, 281320020]

約数ペア:

[(1, 281320020), (2, 140660010), (3, 93773340), (4, 70330005), (5, 56264004), (6, 46886670), (9, 31257780), (10, 28132002), (12, 23443335), (15, 18754668), (18, 15628890), (20, 14066001), (27, 10419260), (30, 9377334), (36, 7814445), (45, 6251556), (54, 5209630), (60, 4688667), (90, 3125778), (108, 2604815), (135, 2083852), (180, 1562889), (270, 1041926), (540, 520963)]