67778840

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{241}}^1$

素因数の和:420

約数の個数: 64

約数和(自身を含む): 156816000

約数和(自身を除く): 89037160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 89, 158, 178, 241, 316, 356, 395, 445, 482, 632, 712, 790, 890, 964, 1205, 1580, 1780, 1928, 2410, 3160, 3560, 4820, 7031, 9640, 14062, 19039, 21449, 28124, 35155, 38078, 42898, 56248, 70310, 76156, 85796, 95195, 107245, 140620, 152312, 171592, 190390, 214490, 281240, 380780, 428980, 761560, 857960, 1694471, 3388942, 6777884, 8472355, 13555768, 16944710, 33889420, 67778840]

約数ペア:

[(1, 67778840), (2, 33889420), (4, 16944710), (5, 13555768), (8, 8472355), (10, 6777884), (20, 3388942), (40, 1694471), (79, 857960), (89, 761560), (158, 428980), (178, 380780), (241, 281240), (316, 214490), (356, 190390), (395, 171592), (445, 152312), (482, 140620), (632, 107245), (712, 95195), (790, 85796), (890, 76156), (964, 70310), (1205, 56248), (1580, 42898), (1780, 38078), (1928, 35155), (2410, 28124), (3160, 21449), (3560, 19039), (4820, 14062), (7031, 9640)]