77904920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{709}}^1$

素因数の和:828

約数の個数: 64

約数和(自身を含む): 182498400

約数和(自身を除く): 104593480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 67, 82, 134, 164, 205, 268, 328, 335, 410, 536, 670, 709, 820, 1340, 1418, 1640, 2680, 2747, 2836, 3545, 5494, 5672, 7090, 10988, 13735, 14180, 21976, 27470, 28360, 29069, 47503, 54940, 58138, 95006, 109880, 116276, 145345, 190012, 232552, 237515, 290690, 380024, 475030, 581380, 950060, 1162760, 1900120, 1947623, 3895246, 7790492, 9738115, 15580984, 19476230, 38952460, 77904920]

約数ペア:

[(1, 77904920), (2, 38952460), (4, 19476230), (5, 15580984), (8, 9738115), (10, 7790492), (20, 3895246), (40, 1947623), (41, 1900120), (67, 1162760), (82, 950060), (134, 581380), (164, 475030), (205, 380024), (268, 290690), (328, 237515), (335, 232552), (410, 190012), (536, 145345), (670, 116276), (709, 109880), (820, 95006), (1340, 58138), (1418, 54940), (1640, 47503), (2680, 29069), (2747, 28360), (2836, 27470), (3545, 21976), (5494, 14180), (5672, 13735), (7090, 10988)]