249501980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{137089}}^1$

素因数の和:137118

約数の個数: 48

約数和(自身を含む): 644871360

約数和(自身を除く): 395369380

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 137089, 274178, 548356, 685445, 959623, 1370890, 1782157, 1919246, 2741780, 3564314, 3838492, 4798115, 7128628, 8910785, 9596230, 12475099, 17821570, 19192460, 24950198, 35643140, 49900396, 62375495, 124750990, 249501980]

約数ペア:

[(1, 249501980), (2, 124750990), (4, 62375495), (5, 49900396), (7, 35643140), (10, 24950198), (13, 19192460), (14, 17821570), (20, 12475099), (26, 9596230), (28, 8910785), (35, 7128628), (52, 4798115), (65, 3838492), (70, 3564314), (91, 2741780), (130, 1919246), (140, 1782157), (182, 1370890), (260, 959623), (364, 685445), (455, 548356), (910, 274178), (1820, 137089)]