20911140

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5051}}^1$

素因数の和:5089

約数の個数: 72

約数和(自身を含む): 66201408

約数和(自身を除く): 45290268

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5051, 10102, 15153, 20204, 25255, 30306, 45459, 50510, 60612, 75765, 90918, 101020, 116173, 151530, 181836, 227295, 232346, 303060, 348519, 454590, 464692, 580865, 697038, 909180, 1045557, 1161730, 1394076, 1742595, 2091114, 2323460, 3485190, 4182228, 5227785, 6970380, 10455570, 20911140]

約数ペア:

[(1, 20911140), (2, 10455570), (3, 6970380), (4, 5227785), (5, 4182228), (6, 3485190), (9, 2323460), (10, 2091114), (12, 1742595), (15, 1394076), (18, 1161730), (20, 1045557), (23, 909180), (30, 697038), (36, 580865), (45, 464692), (46, 454590), (60, 348519), (69, 303060), (90, 232346), (92, 227295), (115, 181836), (138, 151530), (180, 116173), (207, 101020), (230, 90918), (276, 75765), (345, 60612), (414, 50510), (460, 45459), (690, 30306), (828, 25255), (1035, 20204), (1380, 15153), (2070, 10102), (4140, 5051)]