138800840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{307}}^1$

素因数の和:534

約数の個数: 64

約数和(自身を含む): 319334400

約数和(自身を除く): 180533560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 127, 178, 254, 307, 356, 445, 508, 614, 635, 712, 890, 1016, 1228, 1270, 1535, 1780, 2456, 2540, 3070, 3560, 5080, 6140, 11303, 12280, 22606, 27323, 38989, 45212, 54646, 56515, 77978, 90424, 109292, 113030, 136615, 155956, 194945, 218584, 226060, 273230, 311912, 389890, 452120, 546460, 779780, 1092920, 1559560, 3470021, 6940042, 13880084, 17350105, 27760168, 34700210, 69400420, 138800840]

約数ペア:

[(1, 138800840), (2, 69400420), (4, 34700210), (5, 27760168), (8, 17350105), (10, 13880084), (20, 6940042), (40, 3470021), (89, 1559560), (127, 1092920), (178, 779780), (254, 546460), (307, 452120), (356, 389890), (445, 311912), (508, 273230), (614, 226060), (635, 218584), (712, 194945), (890, 155956), (1016, 136615), (1228, 113030), (1270, 109292), (1535, 90424), (1780, 77978), (2456, 56515), (2540, 54646), (3070, 45212), (3560, 38989), (5080, 27323), (6140, 22606), (11303, 12280)]