256997520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27457}}^1$

素因数の和:27489

約数の個数: 120

約数和(自身を含む): 929508216

約数和(自身を除く): 672510696

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 104, 117, 120, 130, 144, 156, 180, 195, 208, 234, 240, 260, 312, 360, 390, 468, 520, 585, 624, 720, 780, 936, 1040, 1170, 1560, 1872, 2340, 3120, 4680, 9360, 27457, 54914, 82371, 109828, 137285, 164742, 219656, 247113, 274570, 329484, 356941, 411855, 439312, 494226, 549140, 658968, 713882, 823710, 988452, 1070823, 1098280, 1235565, 1317936, 1427764, 1647420, 1784705, 1976904, 2141646, 2196560, 2471130, 2855528, 3212469, 3294840, 3569410, 3953808, 4283292, 4942260, 5354115, 5711056, 6424938, 6589680, 7138820, 8566584, 9884520, 10708230, 12849876, 14277640, 16062345, 17133168, 19769040, 21416460, 25699752, 28555280, 32124690, 42832920, 51399504, 64249380, 85665840, 128498760, 256997520]

約数ペア:

[(1, 256997520), (2, 128498760), (3, 85665840), (4, 64249380), (5, 51399504), (6, 42832920), (8, 32124690), (9, 28555280), (10, 25699752), (12, 21416460), (13, 19769040), (15, 17133168), (16, 16062345), (18, 14277640), (20, 12849876), (24, 10708230), (26, 9884520), (30, 8566584), (36, 7138820), (39, 6589680), (40, 6424938), (45, 5711056), (48, 5354115), (52, 4942260), (60, 4283292), (65, 3953808), (72, 3569410), (78, 3294840), (80, 3212469), (90, 2855528), (104, 2471130), (117, 2196560), (120, 2141646), (130, 1976904), (144, 1784705), (156, 1647420), (180, 1427764), (195, 1317936), (208, 1235565), (234, 1098280), (240, 1070823), (260, 988452), (312, 823710), (360, 713882), (390, 658968), (468, 549140), (520, 494226), (585, 439312), (624, 411855), (720, 356941), (780, 329484), (936, 274570), (1040, 247113), (1170, 219656), (1560, 164742), (1872, 137285), (2340, 109828), (3120, 82371), (4680, 54914), (9360, 27457)]