19953220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{359}}^1\times {\mathrm{397}}^1$

素因数の和:772

約数の個数: 48

約数和(自身を含む): 48142080

約数和(自身を除く): 28188860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 359, 397, 718, 794, 1436, 1588, 1795, 1985, 2513, 2779, 3590, 3970, 5026, 5558, 7180, 7940, 10052, 11116, 12565, 13895, 25130, 27790, 50260, 55580, 142523, 285046, 570092, 712615, 997661, 1425230, 1995322, 2850460, 3990644, 4988305, 9976610, 19953220]

約数ペア:

[(1, 19953220), (2, 9976610), (4, 4988305), (5, 3990644), (7, 2850460), (10, 1995322), (14, 1425230), (20, 997661), (28, 712615), (35, 570092), (70, 285046), (140, 142523), (359, 55580), (397, 50260), (718, 27790), (794, 25130), (1436, 13895), (1588, 12565), (1795, 11116), (1985, 10052), (2513, 7940), (2779, 7180), (3590, 5558), (3970, 5026)]