1778906780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{14293}}^1$

素因数の和:14443

約数の個数: 72

約数和(自身を含む): 4380139008

約数和(自身を除く): 2601232228

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 127, 140, 196, 245, 254, 490, 508, 635, 889, 980, 1270, 1778, 2540, 3556, 4445, 6223, 8890, 12446, 14293, 17780, 24892, 28586, 31115, 57172, 62230, 71465, 100051, 124460, 142930, 200102, 285860, 400204, 500255, 700357, 1000510, 1400714, 1815211, 2001020, 2801428, 3501785, 3630422, 7003570, 7260844, 9076055, 12706477, 14007140, 18152110, 25412954, 36304220, 50825908, 63532385, 88945339, 127064770, 177890678, 254129540, 355781356, 444726695, 889453390, 1778906780]

約数ペア:

[(1, 1778906780), (2, 889453390), (4, 444726695), (5, 355781356), (7, 254129540), (10, 177890678), (14, 127064770), (20, 88945339), (28, 63532385), (35, 50825908), (49, 36304220), (70, 25412954), (98, 18152110), (127, 14007140), (140, 12706477), (196, 9076055), (245, 7260844), (254, 7003570), (490, 3630422), (508, 3501785), (635, 2801428), (889, 2001020), (980, 1815211), (1270, 1400714), (1778, 1000510), (2540, 700357), (3556, 500255), (4445, 400204), (6223, 285860), (8890, 200102), (12446, 142930), (14293, 124460), (17780, 100051), (24892, 71465), (28586, 62230), (31115, 57172)]