217517080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{431}}^1$

素因数の和:521

約数の個数: 128

約数和(自身を含む): 567336960

約数和(自身を除く): 349819880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 37, 40, 44, 55, 62, 74, 88, 110, 124, 148, 155, 185, 220, 248, 296, 310, 341, 370, 407, 431, 440, 620, 682, 740, 814, 862, 1147, 1240, 1364, 1480, 1628, 1705, 1724, 2035, 2155, 2294, 2728, 3256, 3410, 3448, 4070, 4310, 4588, 4741, 5735, 6820, 8140, 8620, 9176, 9482, 11470, 12617, 13361, 13640, 15947, 16280, 17240, 18964, 22940, 23705, 25234, 26722, 31894, 37928, 45880, 47410, 50468, 53444, 63085, 63788, 66805, 79735, 94820, 100936, 106888, 126170, 127576, 133610, 146971, 159470, 175417, 189640, 252340, 267220, 293942, 318940, 350834, 494357, 504680, 534440, 587884, 637880, 701668, 734855, 877085, 988714, 1175768, 1403336, 1469710, 1754170, 1977428, 2471785, 2939420, 3508340, 3954856, 4943570, 5437927, 5878840, 7016680, 9887140, 10875854, 19774280, 21751708, 27189635, 43503416, 54379270, 108758540, 217517080]

約数ペア:

[(1, 217517080), (2, 108758540), (4, 54379270), (5, 43503416), (8, 27189635), (10, 21751708), (11, 19774280), (20, 10875854), (22, 9887140), (31, 7016680), (37, 5878840), (40, 5437927), (44, 4943570), (55, 3954856), (62, 3508340), (74, 2939420), (88, 2471785), (110, 1977428), (124, 1754170), (148, 1469710), (155, 1403336), (185, 1175768), (220, 988714), (248, 877085), (296, 734855), (310, 701668), (341, 637880), (370, 587884), (407, 534440), (431, 504680), (440, 494357), (620, 350834), (682, 318940), (740, 293942), (814, 267220), (862, 252340), (1147, 189640), (1240, 175417), (1364, 159470), (1480, 146971), (1628, 133610), (1705, 127576), (1724, 126170), (2035, 106888), (2155, 100936), (2294, 94820), (2728, 79735), (3256, 66805), (3410, 63788), (3448, 63085), (4070, 53444), (4310, 50468), (4588, 47410), (4741, 45880), (5735, 37928), (6820, 31894), (8140, 26722), (8620, 25234), (9176, 23705), (9482, 22940), (11470, 18964), (12617, 17240), (13361, 16280), (13640, 15947)]