257303640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{491}}^1$

素因数の和:913

約数の個数: 128

約数和(自身を含む): 845925120

約数和(自身を除く): 588621480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 397, 440, 491, 660, 794, 982, 1191, 1320, 1473, 1588, 1964, 1985, 2382, 2455, 2946, 3176, 3928, 3970, 4367, 4764, 4910, 5401, 5892, 5955, 7365, 7940, 8734, 9528, 9820, 10802, 11784, 11910, 13101, 14730, 15880, 16203, 17468, 19640, 21604, 21835, 23820, 26202, 27005, 29460, 32406, 34936, 43208, 43670, 47640, 52404, 54010, 58920, 64812, 65505, 81015, 87340, 104808, 108020, 129624, 131010, 162030, 174680, 194927, 216040, 262020, 324060, 389854, 524040, 584781, 648120, 779708, 974635, 1169562, 1559416, 1949270, 2144197, 2339124, 2923905, 3898540, 4288394, 4678248, 5847810, 6432591, 7797080, 8576788, 10720985, 11695620, 12865182, 17153576, 21441970, 23391240, 25730364, 32162955, 42883940, 51460728, 64325910, 85767880, 128651820, 257303640]

約数ペア:

[(1, 257303640), (2, 128651820), (3, 85767880), (4, 64325910), (5, 51460728), (6, 42883940), (8, 32162955), (10, 25730364), (11, 23391240), (12, 21441970), (15, 17153576), (20, 12865182), (22, 11695620), (24, 10720985), (30, 8576788), (33, 7797080), (40, 6432591), (44, 5847810), (55, 4678248), (60, 4288394), (66, 3898540), (88, 2923905), (110, 2339124), (120, 2144197), (132, 1949270), (165, 1559416), (220, 1169562), (264, 974635), (330, 779708), (397, 648120), (440, 584781), (491, 524040), (660, 389854), (794, 324060), (982, 262020), (1191, 216040), (1320, 194927), (1473, 174680), (1588, 162030), (1964, 131010), (1985, 129624), (2382, 108020), (2455, 104808), (2946, 87340), (3176, 81015), (3928, 65505), (3970, 64812), (4367, 58920), (4764, 54010), (4910, 52404), (5401, 47640), (5892, 43670), (5955, 43208), (7365, 34936), (7940, 32406), (8734, 29460), (9528, 27005), (9820, 26202), (10802, 23820), (11784, 21835), (11910, 21604), (13101, 19640), (14730, 17468), (15880, 16203)]