21519885

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{811}}^1$

素因数の和:909

約数の個数: 32

約数和(自身を含む): 36247680

約数和(自身を除く): 14727795

約数列:

[1, 3, 5, 15, 29, 61, 87, 145, 183, 305, 435, 811, 915, 1769, 2433, 4055, 5307, 8845, 12165, 23519, 26535, 49471, 70557, 117595, 148413, 247355, 352785, 742065, 1434659, 4303977, 7173295, 21519885]

約数ペア:

[(1, 21519885), (3, 7173295), (5, 4303977), (15, 1434659), (29, 742065), (61, 352785), (87, 247355), (145, 148413), (183, 117595), (305, 70557), (435, 49471), (811, 26535), (915, 23519), (1769, 12165), (2433, 8845), (4055, 5307)]