21328160

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{139}}^1$

素因数の和:298

約数の個数: 96

約数和(自身を含む): 58423680

約数和(自身を除く): 37095520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 137, 139, 140, 160, 224, 274, 278, 280, 548, 556, 560, 685, 695, 959, 973, 1096, 1112, 1120, 1370, 1390, 1918, 1946, 2192, 2224, 2740, 2780, 3836, 3892, 4384, 4448, 4795, 4865, 5480, 5560, 7672, 7784, 9590, 9730, 10960, 11120, 15344, 15568, 19043, 19180, 19460, 21920, 22240, 30688, 31136, 38086, 38360, 38920, 76172, 76720, 77840, 95215, 133301, 152344, 153440, 155680, 190430, 266602, 304688, 380860, 533204, 609376, 666505, 761720, 1066408, 1333010, 1523440, 2132816, 2666020, 3046880, 4265632, 5332040, 10664080, 21328160]

約数ペア:

[(1, 21328160), (2, 10664080), (4, 5332040), (5, 4265632), (7, 3046880), (8, 2666020), (10, 2132816), (14, 1523440), (16, 1333010), (20, 1066408), (28, 761720), (32, 666505), (35, 609376), (40, 533204), (56, 380860), (70, 304688), (80, 266602), (112, 190430), (137, 155680), (139, 153440), (140, 152344), (160, 133301), (224, 95215), (274, 77840), (278, 76720), (280, 76172), (548, 38920), (556, 38360), (560, 38086), (685, 31136), (695, 30688), (959, 22240), (973, 21920), (1096, 19460), (1112, 19180), (1120, 19043), (1370, 15568), (1390, 15344), (1918, 11120), (1946, 10960), (2192, 9730), (2224, 9590), (2740, 7784), (2780, 7672), (3836, 5560), (3892, 5480), (4384, 4865), (4448, 4795)]