27880820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:353

約数の個数: 72

約数和(自身を含む): 66160584

約数和(自身を除く): 38279764

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 121, 164, 205, 220, 242, 281, 410, 451, 484, 562, 605, 820, 902, 1124, 1210, 1405, 1804, 2255, 2420, 2810, 3091, 4510, 4961, 5620, 6182, 9020, 9922, 11521, 12364, 15455, 19844, 23042, 24805, 30910, 34001, 46084, 49610, 57605, 61820, 68002, 99220, 115210, 126731, 136004, 170005, 230420, 253462, 340010, 506924, 633655, 680020, 1267310, 1394041, 2534620, 2788082, 5576164, 6970205, 13940410, 27880820]

約数ペア:

[(1, 27880820), (2, 13940410), (4, 6970205), (5, 5576164), (10, 2788082), (11, 2534620), (20, 1394041), (22, 1267310), (41, 680020), (44, 633655), (55, 506924), (82, 340010), (110, 253462), (121, 230420), (164, 170005), (205, 136004), (220, 126731), (242, 115210), (281, 99220), (410, 68002), (451, 61820), (484, 57605), (562, 49610), (605, 46084), (820, 34001), (902, 30910), (1124, 24805), (1210, 23042), (1405, 19844), (1804, 15455), (2255, 12364), (2420, 11521), (2810, 9922), (3091, 9020), (4510, 6182), (4961, 5620)]