81153760

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:284

約数の個数: 96

約数和(自身を含む): 200037600

約数和(自身を除く): 118883840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 89, 139, 160, 164, 178, 205, 278, 328, 356, 410, 445, 556, 656, 695, 712, 820, 890, 1112, 1312, 1390, 1424, 1640, 1780, 2224, 2780, 2848, 3280, 3560, 3649, 4448, 5560, 5699, 6560, 7120, 7298, 11120, 11398, 12371, 14240, 14596, 18245, 22240, 22796, 24742, 28495, 29192, 36490, 45592, 49484, 56990, 58384, 61855, 72980, 91184, 98968, 113980, 116768, 123710, 145960, 182368, 197936, 227960, 247420, 291920, 395872, 455920, 494840, 507211, 583840, 911840, 989680, 1014422, 1979360, 2028844, 2536055, 4057688, 5072110, 8115376, 10144220, 16230752, 20288440, 40576880, 81153760]

約数ペア:

[(1, 81153760), (2, 40576880), (4, 20288440), (5, 16230752), (8, 10144220), (10, 8115376), (16, 5072110), (20, 4057688), (32, 2536055), (40, 2028844), (41, 1979360), (80, 1014422), (82, 989680), (89, 911840), (139, 583840), (160, 507211), (164, 494840), (178, 455920), (205, 395872), (278, 291920), (328, 247420), (356, 227960), (410, 197936), (445, 182368), (556, 145960), (656, 123710), (695, 116768), (712, 113980), (820, 98968), (890, 91184), (1112, 72980), (1312, 61855), (1390, 58384), (1424, 56990), (1640, 49484), (1780, 45592), (2224, 36490), (2780, 29192), (2848, 28495), (3280, 24742), (3560, 22796), (3649, 22240), (4448, 18245), (5560, 14596), (5699, 14240), (6560, 12371), (7120, 11398), (7298, 11120)]