218455840

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^2\times {\mathrm{29}}^1\times {\mathrm{89}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 564391800

約数和(自身を除く): 345935960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 29, 32, 40, 46, 58, 80, 89, 92, 115, 116, 145, 160, 178, 184, 230, 232, 290, 356, 368, 445, 460, 464, 529, 580, 667, 712, 736, 890, 920, 928, 1058, 1160, 1334, 1424, 1780, 1840, 2047, 2116, 2320, 2581, 2645, 2668, 2848, 3335, 3560, 3680, 4094, 4232, 4640, 5162, 5290, 5336, 6670, 7120, 8188, 8464, 10235, 10324, 10580, 10672, 12905, 13340, 14240, 15341, 16376, 16928, 20470, 20648, 21160, 21344, 25810, 26680, 30682, 32752, 40940, 41296, 42320, 47081, 51620, 53360, 59363, 61364, 65504, 76705, 81880, 82592, 84640, 94162, 103240, 106720, 118726, 122728, 153410, 163760, 188324, 206480, 235405, 237452, 245456, 296815, 306820, 327520, 376648, 412960, 470810, 474904, 490912, 593630, 613640, 753296, 941620, 949808, 1187260, 1227280, 1365349, 1506592, 1883240, 1899616, 2374520, 2454560, 2730698, 3766480, 4749040, 5461396, 6826745, 7532960, 9498080, 10922792, 13653490, 21845584, 27306980, 43691168, 54613960, 109227920, 218455840]

約数ペア:

[(1, 218455840), (2, 109227920), (4, 54613960), (5, 43691168), (8, 27306980), (10, 21845584), (16, 13653490), (20, 10922792), (23, 9498080), (29, 7532960), (32, 6826745), (40, 5461396), (46, 4749040), (58, 3766480), (80, 2730698), (89, 2454560), (92, 2374520), (115, 1899616), (116, 1883240), (145, 1506592), (160, 1365349), (178, 1227280), (184, 1187260), (230, 949808), (232, 941620), (290, 753296), (356, 613640), (368, 593630), (445, 490912), (460, 474904), (464, 470810), (529, 412960), (580, 376648), (667, 327520), (712, 306820), (736, 296815), (890, 245456), (920, 237452), (928, 235405), (1058, 206480), (1160, 188324), (1334, 163760), (1424, 153410), (1780, 122728), (1840, 118726), (2047, 106720), (2116, 103240), (2320, 94162), (2581, 84640), (2645, 82592), (2668, 81880), (2848, 76705), (3335, 65504), (3560, 61364), (3680, 59363), (4094, 53360), (4232, 51620), (4640, 47081), (5162, 42320), (5290, 41296), (5336, 40940), (6670, 32752), (7120, 30682), (8188, 26680), (8464, 25810), (10235, 21344), (10324, 21160), (10580, 20648), (10672, 20470), (12905, 16928), (13340, 16376), (14240, 15341)]