257952660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{87739}}^1$

素因数の和:87765

約数の個数: 72

約数和(自身を含む): 840198240

約数和(自身を除く): 582245580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 87739, 175478, 263217, 350956, 438695, 526434, 614173, 877390, 1052868, 1228346, 1316085, 1754780, 1842519, 2456692, 2632170, 3070865, 3685038, 4299211, 5264340, 6141730, 7370076, 8598422, 9212595, 12283460, 12897633, 17196844, 18425190, 21496055, 25795266, 36850380, 42992110, 51590532, 64488165, 85984220, 128976330, 257952660]

約数ペア:

[(1, 257952660), (2, 128976330), (3, 85984220), (4, 64488165), (5, 51590532), (6, 42992110), (7, 36850380), (10, 25795266), (12, 21496055), (14, 18425190), (15, 17196844), (20, 12897633), (21, 12283460), (28, 9212595), (30, 8598422), (35, 7370076), (42, 6141730), (49, 5264340), (60, 4299211), (70, 3685038), (84, 3070865), (98, 2632170), (105, 2456692), (140, 1842519), (147, 1754780), (196, 1316085), (210, 1228346), (245, 1052868), (294, 877390), (420, 614173), (490, 526434), (588, 438695), (735, 350956), (980, 263217), (1470, 175478), (2940, 87739)]