15865980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{20341}}^1$

素因数の和:20366

約数の個数: 48

約数和(自身を含む): 47844384

約数和(自身を除く): 31978404

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 20341, 40682, 61023, 81364, 101705, 122046, 203410, 244092, 264433, 305115, 406820, 528866, 610230, 793299, 1057732, 1220460, 1322165, 1586598, 2644330, 3173196, 3966495, 5288660, 7932990, 15865980]

約数ペア:

[(1, 15865980), (2, 7932990), (3, 5288660), (4, 3966495), (5, 3173196), (6, 2644330), (10, 1586598), (12, 1322165), (13, 1220460), (15, 1057732), (20, 793299), (26, 610230), (30, 528866), (39, 406820), (52, 305115), (60, 264433), (65, 244092), (78, 203410), (130, 122046), (156, 101705), (195, 81364), (260, 61023), (390, 40682), (780, 20341)]