81651960

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{239}}^1$

素因数の和:342

約数の個数: 192

約数和(自身を含む): 290908800

約数和(自身を除く): 209256840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 73, 78, 90, 104, 117, 120, 130, 146, 156, 180, 195, 219, 234, 239, 260, 292, 312, 360, 365, 390, 438, 468, 478, 520, 584, 585, 657, 717, 730, 780, 876, 936, 949, 956, 1095, 1170, 1195, 1314, 1434, 1460, 1560, 1752, 1898, 1912, 2151, 2190, 2340, 2390, 2628, 2847, 2868, 2920, 3107, 3285, 3585, 3796, 4302, 4380, 4680, 4745, 4780, 5256, 5694, 5736, 6214, 6570, 7170, 7592, 8541, 8604, 8760, 9321, 9490, 9560, 10755, 11388, 12428, 13140, 14235, 14340, 15535, 17082, 17208, 17447, 18642, 18980, 21510, 22776, 24856, 26280, 27963, 28470, 28680, 31070, 34164, 34894, 37284, 37960, 42705, 43020, 46605, 52341, 55926, 56940, 62140, 68328, 69788, 74568, 85410, 86040, 87235, 93210, 104682, 111852, 113880, 124280, 139576, 139815, 157023, 170820, 174470, 186420, 209364, 223704, 226811, 261705, 279630, 314046, 341640, 348940, 372840, 418728, 453622, 523410, 559260, 628092, 680433, 697880, 785115, 907244, 1046820, 1118520, 1134055, 1256184, 1360866, 1570230, 1814488, 2041299, 2093640, 2268110, 2721732, 3140460, 3402165, 4082598, 4536220, 5443464, 6280920, 6804330, 8165196, 9072440, 10206495, 13608660, 16330392, 20412990, 27217320, 40825980, 81651960]

約数ペア:

[(1, 81651960), (2, 40825980), (3, 27217320), (4, 20412990), (5, 16330392), (6, 13608660), (8, 10206495), (9, 9072440), (10, 8165196), (12, 6804330), (13, 6280920), (15, 5443464), (18, 4536220), (20, 4082598), (24, 3402165), (26, 3140460), (30, 2721732), (36, 2268110), (39, 2093640), (40, 2041299), (45, 1814488), (52, 1570230), (60, 1360866), (65, 1256184), (72, 1134055), (73, 1118520), (78, 1046820), (90, 907244), (104, 785115), (117, 697880), (120, 680433), (130, 628092), (146, 559260), (156, 523410), (180, 453622), (195, 418728), (219, 372840), (234, 348940), (239, 341640), (260, 314046), (292, 279630), (312, 261705), (360, 226811), (365, 223704), (390, 209364), (438, 186420), (468, 174470), (478, 170820), (520, 157023), (584, 139815), (585, 139576), (657, 124280), (717, 113880), (730, 111852), (780, 104682), (876, 93210), (936, 87235), (949, 86040), (956, 85410), (1095, 74568), (1170, 69788), (1195, 68328), (1314, 62140), (1434, 56940), (1460, 55926), (1560, 52341), (1752, 46605), (1898, 43020), (1912, 42705), (2151, 37960), (2190, 37284), (2340, 34894), (2390, 34164), (2628, 31070), (2847, 28680), (2868, 28470), (2920, 27963), (3107, 26280), (3285, 24856), (3585, 22776), (3796, 21510), (4302, 18980), (4380, 18642), (4680, 17447), (4745, 17208), (4780, 17082), (5256, 15535), (5694, 14340), (5736, 14235), (6214, 13140), (6570, 12428), (7170, 11388), (7592, 10755), (8541, 9560), (8604, 9490), (8760, 9321)]