19721388

素因数分解:

$2^2\times 3^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{479}}^1$

素因数の和:606

約数の個数: 48

約数和(自身を含む): 47738880

約数和(自身を除く): 28017492

約数列:

[1, 2, 3, 4, 6, 12, 47, 73, 94, 141, 146, 188, 219, 282, 292, 438, 479, 564, 876, 958, 1437, 1916, 2874, 3431, 5748, 6862, 10293, 13724, 20586, 22513, 34967, 41172, 45026, 67539, 69934, 90052, 104901, 135078, 139868, 209802, 270156, 419604, 1643449, 3286898, 4930347, 6573796, 9860694, 19721388]

約数ペア:

[(1, 19721388), (2, 9860694), (3, 6573796), (4, 4930347), (6, 3286898), (12, 1643449), (47, 419604), (73, 270156), (94, 209802), (141, 139868), (146, 135078), (188, 104901), (219, 90052), (282, 69934), (292, 67539), (438, 45026), (479, 41172), (564, 34967), (876, 22513), (958, 20586), (1437, 13724), (1916, 10293), (2874, 6862), (3431, 5748)]