255984640

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^2\times {\mathrm{173}}^1$

素因数の和:232

約数の個数: 132

約数和(自身を含む): 656079876

約数和(自身を除く): 400095236

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 173, 256, 272, 289, 320, 340, 346, 512, 544, 578, 640, 680, 692, 865, 1024, 1088, 1156, 1280, 1360, 1384, 1445, 1730, 2176, 2312, 2560, 2720, 2768, 2890, 2941, 3460, 4352, 4624, 5120, 5440, 5536, 5780, 5882, 6920, 8704, 9248, 10880, 11072, 11560, 11764, 13840, 14705, 17408, 18496, 21760, 22144, 23120, 23528, 27680, 29410, 36992, 43520, 44288, 46240, 47056, 49997, 55360, 58820, 73984, 87040, 88576, 92480, 94112, 99994, 110720, 117640, 147968, 177152, 184960, 188224, 199988, 221440, 235280, 249985, 295936, 369920, 376448, 399976, 442880, 470560, 499970, 739840, 752896, 799952, 885760, 941120, 999940, 1479680, 1505792, 1599904, 1882240, 1999880, 3011584, 3199808, 3764480, 3999760, 6399616, 7528960, 7999520, 12799232, 15057920, 15999040, 25598464, 31998080, 51196928, 63996160, 127992320, 255984640]

約数ペア:

[(1, 255984640), (2, 127992320), (4, 63996160), (5, 51196928), (8, 31998080), (10, 25598464), (16, 15999040), (17, 15057920), (20, 12799232), (32, 7999520), (34, 7528960), (40, 6399616), (64, 3999760), (68, 3764480), (80, 3199808), (85, 3011584), (128, 1999880), (136, 1882240), (160, 1599904), (170, 1505792), (173, 1479680), (256, 999940), (272, 941120), (289, 885760), (320, 799952), (340, 752896), (346, 739840), (512, 499970), (544, 470560), (578, 442880), (640, 399976), (680, 376448), (692, 369920), (865, 295936), (1024, 249985), (1088, 235280), (1156, 221440), (1280, 199988), (1360, 188224), (1384, 184960), (1445, 177152), (1730, 147968), (2176, 117640), (2312, 110720), (2560, 99994), (2720, 94112), (2768, 92480), (2890, 88576), (2941, 87040), (3460, 73984), (4352, 58820), (4624, 55360), (5120, 49997), (5440, 47056), (5536, 46240), (5780, 44288), (5882, 43520), (6920, 36992), (8704, 29410), (9248, 27680), (10880, 23528), (11072, 23120), (11560, 22144), (11764, 21760), (13840, 18496), (14705, 17408)]