217287680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:130

約数の個数: 132

約数和(自身を含む): 552984768

約数和(自身を除く): 335697088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 37, 40, 62, 64, 74, 80, 124, 128, 148, 155, 160, 185, 248, 256, 296, 310, 320, 370, 496, 512, 592, 620, 640, 740, 992, 1024, 1147, 1184, 1240, 1280, 1369, 1480, 1984, 2294, 2368, 2480, 2560, 2738, 2960, 3968, 4588, 4736, 4960, 5120, 5476, 5735, 5920, 6845, 7936, 9176, 9472, 9920, 10952, 11470, 11840, 13690, 15872, 18352, 18944, 19840, 21904, 22940, 23680, 27380, 31744, 36704, 37888, 39680, 42439, 43808, 45880, 47360, 54760, 73408, 79360, 84878, 87616, 91760, 94720, 109520, 146816, 158720, 169756, 175232, 183520, 189440, 212195, 219040, 293632, 339512, 350464, 367040, 424390, 438080, 587264, 679024, 700928, 734080, 848780, 876160, 1174528, 1358048, 1401856, 1468160, 1697560, 1752320, 2716096, 2936320, 3395120, 3504640, 5432192, 5872640, 6790240, 7009280, 10864384, 13580480, 21728768, 27160960, 43457536, 54321920, 108643840, 217287680]

約数ペア:

[(1, 217287680), (2, 108643840), (4, 54321920), (5, 43457536), (8, 27160960), (10, 21728768), (16, 13580480), (20, 10864384), (31, 7009280), (32, 6790240), (37, 5872640), (40, 5432192), (62, 3504640), (64, 3395120), (74, 2936320), (80, 2716096), (124, 1752320), (128, 1697560), (148, 1468160), (155, 1401856), (160, 1358048), (185, 1174528), (248, 876160), (256, 848780), (296, 734080), (310, 700928), (320, 679024), (370, 587264), (496, 438080), (512, 424390), (592, 367040), (620, 350464), (640, 339512), (740, 293632), (992, 219040), (1024, 212195), (1147, 189440), (1184, 183520), (1240, 175232), (1280, 169756), (1369, 158720), (1480, 146816), (1984, 109520), (2294, 94720), (2368, 91760), (2480, 87616), (2560, 84878), (2738, 79360), (2960, 73408), (3968, 54760), (4588, 47360), (4736, 45880), (4960, 43808), (5120, 42439), (5476, 39680), (5735, 37888), (5920, 36704), (6845, 31744), (7936, 27380), (9176, 23680), (9472, 22940), (9920, 21904), (10952, 19840), (11470, 18944), (11840, 18352), (13690, 15872)]