280587776

素因数分解:

$2^9\times 7^1\times {\mathrm{79}}^1\times {\mathrm{991}}^1$

素因数の和:1095

約数の個数: 80

約数和(自身を含む): 649482240

約数和(自身を除く): 368894464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 79, 112, 128, 158, 224, 256, 316, 448, 512, 553, 632, 896, 991, 1106, 1264, 1792, 1982, 2212, 2528, 3584, 3964, 4424, 5056, 6937, 7928, 8848, 10112, 13874, 15856, 17696, 20224, 27748, 31712, 35392, 40448, 55496, 63424, 70784, 78289, 110992, 126848, 141568, 156578, 221984, 253696, 283136, 313156, 443968, 507392, 548023, 626312, 887936, 1096046, 1252624, 1775872, 2192092, 2505248, 3551744, 4384184, 5010496, 8768368, 10020992, 17536736, 20041984, 35073472, 40083968, 70146944, 140293888, 280587776]

約数ペア:

[(1, 280587776), (2, 140293888), (4, 70146944), (7, 40083968), (8, 35073472), (14, 20041984), (16, 17536736), (28, 10020992), (32, 8768368), (56, 5010496), (64, 4384184), (79, 3551744), (112, 2505248), (128, 2192092), (158, 1775872), (224, 1252624), (256, 1096046), (316, 887936), (448, 626312), (512, 548023), (553, 507392), (632, 443968), (896, 313156), (991, 283136), (1106, 253696), (1264, 221984), (1792, 156578), (1982, 141568), (2212, 126848), (2528, 110992), (3584, 78289), (3964, 70784), (4424, 63424), (5056, 55496), (6937, 40448), (7928, 35392), (8848, 31712), (10112, 27748), (13874, 20224), (15856, 17696)]