20848520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{967}}^1$

素因数の和:1003

約数の個数: 96

約数和(自身を含む): 59590080

約数和(自身を除く): 38741560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 967, 980, 1078, 1540, 1934, 1960, 2156, 2695, 3080, 3868, 4312, 4835, 5390, 6769, 7736, 9670, 10637, 10780, 13538, 19340, 21274, 21560, 27076, 33845, 38680, 42548, 47383, 53185, 54152, 67690, 74459, 85096, 94766, 106370, 135380, 148918, 189532, 212740, 236915, 270760, 297836, 372295, 379064, 425480, 473830, 521213, 595672, 744590, 947660, 1042426, 1489180, 1895320, 2084852, 2606065, 2978360, 4169704, 5212130, 10424260, 20848520]

約数ペア:

[(1, 20848520), (2, 10424260), (4, 5212130), (5, 4169704), (7, 2978360), (8, 2606065), (10, 2084852), (11, 1895320), (14, 1489180), (20, 1042426), (22, 947660), (28, 744590), (35, 595672), (40, 521213), (44, 473830), (49, 425480), (55, 379064), (56, 372295), (70, 297836), (77, 270760), (88, 236915), (98, 212740), (110, 189532), (140, 148918), (154, 135380), (196, 106370), (220, 94766), (245, 85096), (280, 74459), (308, 67690), (385, 54152), (392, 53185), (440, 47383), (490, 42548), (539, 38680), (616, 33845), (770, 27076), (967, 21560), (980, 21274), (1078, 19340), (1540, 13538), (1934, 10780), (1960, 10637), (2156, 9670), (2695, 7736), (3080, 6769), (3868, 5390), (4312, 4835)]