28505890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{21433}}^1$

素因数の和:21466

約数の個数: 32

約数和(自身を含む): 61729920

約数和(自身を除く): 33224030

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 21433, 42866, 107165, 150031, 214330, 300062, 407227, 750155, 814454, 1500310, 2036135, 2850589, 4072270, 5701178, 14252945, 28505890]

約数ペア:

[(1, 28505890), (2, 14252945), (5, 5701178), (7, 4072270), (10, 2850589), (14, 2036135), (19, 1500310), (35, 814454), (38, 750155), (70, 407227), (95, 300062), (133, 214330), (190, 150031), (266, 107165), (665, 42866), (1330, 21433)]