64674520

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:628

約数の個数: 64

約数和(自身を含む): 151437600

約数和(自身を除く): 86763080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 89, 148, 178, 185, 296, 356, 370, 445, 491, 712, 740, 890, 982, 1480, 1780, 1964, 2455, 3293, 3560, 3928, 4910, 6586, 9820, 13172, 16465, 18167, 19640, 26344, 32930, 36334, 43699, 65860, 72668, 87398, 90835, 131720, 145336, 174796, 181670, 218495, 349592, 363340, 436990, 726680, 873980, 1616863, 1747960, 3233726, 6467452, 8084315, 12934904, 16168630, 32337260, 64674520]

約数ペア:

[(1, 64674520), (2, 32337260), (4, 16168630), (5, 12934904), (8, 8084315), (10, 6467452), (20, 3233726), (37, 1747960), (40, 1616863), (74, 873980), (89, 726680), (148, 436990), (178, 363340), (185, 349592), (296, 218495), (356, 181670), (370, 174796), (445, 145336), (491, 131720), (712, 90835), (740, 87398), (890, 72668), (982, 65860), (1480, 43699), (1780, 36334), (1964, 32930), (2455, 26344), (3293, 19640), (3560, 18167), (3928, 16465), (4910, 13172), (6586, 9820)]