209214280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:311

約数の個数: 128

約数和(自身を含む): 537788160

約数和(自身を除く): 328573880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 37, 40, 44, 55, 71, 74, 88, 110, 142, 148, 181, 185, 220, 284, 296, 355, 362, 370, 407, 440, 568, 710, 724, 740, 781, 814, 905, 1420, 1448, 1480, 1562, 1628, 1810, 1991, 2035, 2627, 2840, 3124, 3256, 3620, 3905, 3982, 4070, 5254, 6248, 6697, 7240, 7810, 7964, 8140, 9955, 10508, 12851, 13135, 13394, 15620, 15928, 16280, 19910, 21016, 25702, 26270, 26788, 28897, 31240, 33485, 39820, 51404, 52540, 53576, 57794, 64255, 66970, 73667, 79640, 102808, 105080, 115588, 128510, 133940, 141361, 144485, 147334, 231176, 257020, 267880, 282722, 288970, 294668, 368335, 475487, 514040, 565444, 577940, 589336, 706805, 736670, 950974, 1130888, 1155880, 1413610, 1473340, 1901948, 2377435, 2827220, 2946680, 3803896, 4754870, 5230357, 5654440, 9509740, 10460714, 19019480, 20921428, 26151785, 41842856, 52303570, 104607140, 209214280]

約数ペア:

[(1, 209214280), (2, 104607140), (4, 52303570), (5, 41842856), (8, 26151785), (10, 20921428), (11, 19019480), (20, 10460714), (22, 9509740), (37, 5654440), (40, 5230357), (44, 4754870), (55, 3803896), (71, 2946680), (74, 2827220), (88, 2377435), (110, 1901948), (142, 1473340), (148, 1413610), (181, 1155880), (185, 1130888), (220, 950974), (284, 736670), (296, 706805), (355, 589336), (362, 577940), (370, 565444), (407, 514040), (440, 475487), (568, 368335), (710, 294668), (724, 288970), (740, 282722), (781, 267880), (814, 257020), (905, 231176), (1420, 147334), (1448, 144485), (1480, 141361), (1562, 133940), (1628, 128510), (1810, 115588), (1991, 105080), (2035, 102808), (2627, 79640), (2840, 73667), (3124, 66970), (3256, 64255), (3620, 57794), (3905, 53576), (3982, 52540), (4070, 51404), (5254, 39820), (6248, 33485), (6697, 31240), (7240, 28897), (7810, 26788), (7964, 26270), (8140, 25702), (9955, 21016), (10508, 19910), (12851, 16280), (13135, 15928), (13394, 15620)]