80642560

素因数分解:

$2^9\times 5^1\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:166

約数の個数: 120

約数和(自身を含む): 207280260

約数和(自身を除く): 126637700

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 109, 128, 136, 160, 170, 218, 256, 272, 289, 320, 340, 436, 512, 544, 545, 578, 640, 680, 872, 1088, 1090, 1156, 1280, 1360, 1445, 1744, 1853, 2176, 2180, 2312, 2560, 2720, 2890, 3488, 3706, 4352, 4360, 4624, 5440, 5780, 6976, 7412, 8704, 8720, 9248, 9265, 10880, 11560, 13952, 14824, 17440, 18496, 18530, 21760, 23120, 27904, 29648, 31501, 34880, 36992, 37060, 43520, 46240, 55808, 59296, 63002, 69760, 73984, 74120, 92480, 118592, 126004, 139520, 147968, 148240, 157505, 184960, 237184, 252008, 279040, 296480, 315010, 369920, 474368, 504016, 592960, 630020, 739840, 948736, 1008032, 1185920, 1260040, 2016064, 2371840, 2520080, 4032128, 4743680, 5040160, 8064256, 10080320, 16128512, 20160640, 40321280, 80642560]

約数ペア:

[(1, 80642560), (2, 40321280), (4, 20160640), (5, 16128512), (8, 10080320), (10, 8064256), (16, 5040160), (17, 4743680), (20, 4032128), (32, 2520080), (34, 2371840), (40, 2016064), (64, 1260040), (68, 1185920), (80, 1008032), (85, 948736), (109, 739840), (128, 630020), (136, 592960), (160, 504016), (170, 474368), (218, 369920), (256, 315010), (272, 296480), (289, 279040), (320, 252008), (340, 237184), (436, 184960), (512, 157505), (544, 148240), (545, 147968), (578, 139520), (640, 126004), (680, 118592), (872, 92480), (1088, 74120), (1090, 73984), (1156, 69760), (1280, 63002), (1360, 59296), (1445, 55808), (1744, 46240), (1853, 43520), (2176, 37060), (2180, 36992), (2312, 34880), (2560, 31501), (2720, 29648), (2890, 27904), (3488, 23120), (3706, 21760), (4352, 18530), (4360, 18496), (4624, 17440), (5440, 14824), (5780, 13952), (6976, 11560), (7412, 10880), (8704, 9265), (8720, 9248)]