51530840

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 119750400

約数和(自身を除く): 68219560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 109, 212, 218, 223, 265, 424, 436, 446, 530, 545, 872, 892, 1060, 1090, 1115, 1784, 2120, 2180, 2230, 4360, 4460, 5777, 8920, 11554, 11819, 23108, 23638, 24307, 28885, 46216, 47276, 48614, 57770, 59095, 94552, 97228, 115540, 118190, 121535, 194456, 231080, 236380, 243070, 472760, 486140, 972280, 1288271, 2576542, 5153084, 6441355, 10306168, 12882710, 25765420, 51530840]

約数ペア:

[(1, 51530840), (2, 25765420), (4, 12882710), (5, 10306168), (8, 6441355), (10, 5153084), (20, 2576542), (40, 1288271), (53, 972280), (106, 486140), (109, 472760), (212, 243070), (218, 236380), (223, 231080), (265, 194456), (424, 121535), (436, 118190), (446, 115540), (530, 97228), (545, 94552), (872, 59095), (892, 57770), (1060, 48614), (1090, 47276), (1115, 46216), (1784, 28885), (2120, 24307), (2180, 23638), (2230, 23108), (4360, 11819), (4460, 11554), (5777, 8920)]