66304640

素因数分解:

$2^7\times 5^1\times {\mathrm{211}}^1\times {\mathrm{491}}^1$

素因数の和:721

約数の個数: 64

約数和(自身を含む): 159585120

約数和(自身を除く): 93280480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 320, 422, 491, 640, 844, 982, 1055, 1688, 1964, 2110, 2455, 3376, 3928, 4220, 4910, 6752, 7856, 8440, 9820, 13504, 15712, 16880, 19640, 27008, 31424, 33760, 39280, 62848, 67520, 78560, 103601, 135040, 157120, 207202, 314240, 414404, 518005, 828808, 1036010, 1657616, 2072020, 3315232, 4144040, 6630464, 8288080, 13260928, 16576160, 33152320, 66304640]

約数ペア:

[(1, 66304640), (2, 33152320), (4, 16576160), (5, 13260928), (8, 8288080), (10, 6630464), (16, 4144040), (20, 3315232), (32, 2072020), (40, 1657616), (64, 1036010), (80, 828808), (128, 518005), (160, 414404), (211, 314240), (320, 207202), (422, 157120), (491, 135040), (640, 103601), (844, 78560), (982, 67520), (1055, 62848), (1688, 39280), (1964, 33760), (2110, 31424), (2455, 27008), (3376, 19640), (3928, 16880), (4220, 15712), (4910, 13504), (6752, 9820), (7856, 8440)]