21190738864

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{311}}^1\times {\mathrm{643}}^1$

素因数の和:1178

約数の個数: 80

約数和(自身を含む): 42604773120

約数和(自身を除く): 21414034256

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 179, 296, 311, 358, 592, 622, 643, 716, 1244, 1286, 1432, 2488, 2572, 2864, 4976, 5144, 6623, 10288, 11507, 13246, 23014, 23791, 26492, 46028, 47582, 52984, 55669, 92056, 95164, 105968, 111338, 115097, 184112, 190328, 199973, 222676, 230194, 380656, 399946, 445352, 460388, 799892, 890704, 920776, 1599784, 1841552, 2059753, 3199568, 4119506, 4258589, 7399001, 8239012, 8517178, 14798002, 16478024, 17034356, 29596004, 32956048, 34068712, 35795167, 59192008, 68137424, 71590334, 118384016, 143180668, 286361336, 572722672, 1324421179, 2648842358, 5297684716, 10595369432, 21190738864]

約数ペア:

[(1, 21190738864), (2, 10595369432), (4, 5297684716), (8, 2648842358), (16, 1324421179), (37, 572722672), (74, 286361336), (148, 143180668), (179, 118384016), (296, 71590334), (311, 68137424), (358, 59192008), (592, 35795167), (622, 34068712), (643, 32956048), (716, 29596004), (1244, 17034356), (1286, 16478024), (1432, 14798002), (2488, 8517178), (2572, 8239012), (2864, 7399001), (4976, 4258589), (5144, 4119506), (6623, 3199568), (10288, 2059753), (11507, 1841552), (13246, 1599784), (23014, 920776), (23791, 890704), (26492, 799892), (46028, 460388), (47582, 445352), (52984, 399946), (55669, 380656), (92056, 230194), (95164, 222676), (105968, 199973), (111338, 190328), (115097, 184112)]