256331320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{751}}^1$

素因数の和:845

約数の個数: 128

約数和(自身を含む): 701706240

約数和(自身を除く): 445374920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 53, 56, 70, 92, 106, 115, 140, 161, 184, 212, 230, 265, 280, 322, 371, 424, 460, 530, 644, 742, 751, 805, 920, 1060, 1219, 1288, 1484, 1502, 1610, 1855, 2120, 2438, 2968, 3004, 3220, 3710, 3755, 4876, 5257, 6008, 6095, 6440, 7420, 7510, 8533, 9752, 10514, 12190, 14840, 15020, 17066, 17273, 21028, 24380, 26285, 30040, 34132, 34546, 39803, 42056, 42665, 48760, 52570, 68264, 69092, 79606, 85330, 86365, 105140, 120911, 138184, 159212, 170660, 172730, 199015, 210280, 241822, 278621, 318424, 341320, 345460, 398030, 483644, 557242, 604555, 690920, 796060, 915469, 967288, 1114484, 1209110, 1393105, 1592120, 1830938, 2228968, 2418220, 2786210, 3661876, 4577345, 4836440, 5572420, 6408283, 7323752, 9154690, 11144840, 12816566, 18309380, 25633132, 32041415, 36618760, 51266264, 64082830, 128165660, 256331320]

約数ペア:

[(1, 256331320), (2, 128165660), (4, 64082830), (5, 51266264), (7, 36618760), (8, 32041415), (10, 25633132), (14, 18309380), (20, 12816566), (23, 11144840), (28, 9154690), (35, 7323752), (40, 6408283), (46, 5572420), (53, 4836440), (56, 4577345), (70, 3661876), (92, 2786210), (106, 2418220), (115, 2228968), (140, 1830938), (161, 1592120), (184, 1393105), (212, 1209110), (230, 1114484), (265, 967288), (280, 915469), (322, 796060), (371, 690920), (424, 604555), (460, 557242), (530, 483644), (644, 398030), (742, 345460), (751, 341320), (805, 318424), (920, 278621), (1060, 241822), (1219, 210280), (1288, 199015), (1484, 172730), (1502, 170660), (1610, 159212), (1855, 138184), (2120, 120911), (2438, 105140), (2968, 86365), (3004, 85330), (3220, 79606), (3710, 69092), (3755, 68264), (4876, 52570), (5257, 48760), (6008, 42665), (6095, 42056), (6440, 39803), (7420, 34546), (7510, 34132), (8533, 30040), (9752, 26285), (10514, 24380), (12190, 21028), (14840, 17273), (15020, 17066)]