20121247784

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{281}}^1\times {\mathrm{73973}}^1$

素因数の和:74282

約数の個数: 48

約数和(自身を含む): 41617032660

約数和(自身を除く): 21495784876

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 121, 242, 281, 484, 562, 968, 1124, 2248, 3091, 6182, 12364, 24728, 34001, 68002, 73973, 136004, 147946, 272008, 295892, 591784, 813703, 1627406, 3254812, 6509624, 8950733, 17901466, 20786413, 35802932, 41572826, 71605864, 83145652, 166291304, 228650543, 457301086, 914602172, 1829204344, 2515155973, 5030311946, 10060623892, 20121247784]

約数ペア:

[(1, 20121247784), (2, 10060623892), (4, 5030311946), (8, 2515155973), (11, 1829204344), (22, 914602172), (44, 457301086), (88, 228650543), (121, 166291304), (242, 83145652), (281, 71605864), (484, 41572826), (562, 35802932), (968, 20786413), (1124, 17901466), (2248, 8950733), (3091, 6509624), (6182, 3254812), (12364, 1627406), (24728, 813703), (34001, 591784), (68002, 295892), (73973, 272008), (136004, 147946)]