20120681680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{277}}^1\times {\mathrm{419}}^1$

素因数の和:917

約数の個数: 160

約数和(自身を含む): 51600447360

約数和(自身を除く): 31479765680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 197, 220, 277, 394, 419, 440, 554, 788, 838, 880, 985, 1108, 1385, 1576, 1676, 1970, 2095, 2167, 2216, 2770, 3047, 3152, 3352, 3940, 4190, 4334, 4432, 4609, 5540, 6094, 6704, 7880, 8380, 8668, 9218, 10835, 11080, 12188, 15235, 15760, 16760, 17336, 18436, 21670, 22160, 23045, 24376, 30470, 33520, 34672, 36872, 43340, 46090, 48752, 54569, 60940, 73744, 82543, 86680, 92180, 109138, 116063, 121880, 165086, 173360, 184360, 218276, 232126, 243760, 272845, 330172, 368720, 412715, 436552, 464252, 545690, 580315, 600259, 660344, 825430, 873104, 907973, 928504, 1091380, 1160630, 1200518, 1276693, 1320688, 1650860, 1815946, 1857008, 2182760, 2321260, 2401036, 2553386, 3001295, 3301720, 3631892, 4365520, 4539865, 4642520, 4802072, 5106772, 6002590, 6383465, 6603440, 7263784, 9079730, 9285040, 9604144, 10213544, 12005180, 12766930, 14527568, 18159460, 20427088, 22864411, 24010360, 25533860, 36318920, 45728822, 48020720, 51067720, 72637840, 91457644, 102135440, 114322055, 182915288, 228644110, 251508521, 365830576, 457288220, 503017042, 914576440, 1006034084, 1257542605, 1829152880, 2012068168, 2515085210, 4024136336, 5030170420, 10060340840, 20120681680]

約数ペア:

[(1, 20120681680), (2, 10060340840), (4, 5030170420), (5, 4024136336), (8, 2515085210), (10, 2012068168), (11, 1829152880), (16, 1257542605), (20, 1006034084), (22, 914576440), (40, 503017042), (44, 457288220), (55, 365830576), (80, 251508521), (88, 228644110), (110, 182915288), (176, 114322055), (197, 102135440), (220, 91457644), (277, 72637840), (394, 51067720), (419, 48020720), (440, 45728822), (554, 36318920), (788, 25533860), (838, 24010360), (880, 22864411), (985, 20427088), (1108, 18159460), (1385, 14527568), (1576, 12766930), (1676, 12005180), (1970, 10213544), (2095, 9604144), (2167, 9285040), (2216, 9079730), (2770, 7263784), (3047, 6603440), (3152, 6383465), (3352, 6002590), (3940, 5106772), (4190, 4802072), (4334, 4642520), (4432, 4539865), (4609, 4365520), (5540, 3631892), (6094, 3301720), (6704, 3001295), (7880, 2553386), (8380, 2401036), (8668, 2321260), (9218, 2182760), (10835, 1857008), (11080, 1815946), (12188, 1650860), (15235, 1320688), (15760, 1276693), (16760, 1200518), (17336, 1160630), (18436, 1091380), (21670, 928504), (22160, 907973), (23045, 873104), (24376, 825430), (30470, 660344), (33520, 600259), (34672, 580315), (36872, 545690), (43340, 464252), (46090, 436552), (48752, 412715), (54569, 368720), (60940, 330172), (73744, 272845), (82543, 243760), (86680, 232126), (92180, 218276), (109138, 184360), (116063, 173360), (121880, 165086)]