19803984

素因数分解:

$2^4\times 3^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{347}}^1$

素因数の和:428

約数の個数: 80

約数和(自身を含む): 54371520

約数和(自身を除く): 34567536

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 41, 48, 58, 82, 87, 116, 123, 164, 174, 232, 246, 328, 347, 348, 464, 492, 656, 694, 696, 984, 1041, 1189, 1388, 1392, 1968, 2082, 2378, 2776, 3567, 4164, 4756, 5552, 7134, 8328, 9512, 10063, 14227, 14268, 16656, 19024, 20126, 28454, 28536, 30189, 40252, 42681, 56908, 57072, 60378, 80504, 85362, 113816, 120756, 161008, 170724, 227632, 241512, 341448, 412583, 483024, 682896, 825166, 1237749, 1650332, 2475498, 3300664, 4950996, 6601328, 9901992, 19803984]

約数ペア:

[(1, 19803984), (2, 9901992), (3, 6601328), (4, 4950996), (6, 3300664), (8, 2475498), (12, 1650332), (16, 1237749), (24, 825166), (29, 682896), (41, 483024), (48, 412583), (58, 341448), (82, 241512), (87, 227632), (116, 170724), (123, 161008), (164, 120756), (174, 113816), (232, 85362), (246, 80504), (328, 60378), (347, 57072), (348, 56908), (464, 42681), (492, 40252), (656, 30189), (694, 28536), (696, 28454), (984, 20126), (1041, 19024), (1189, 16656), (1388, 14268), (1392, 14227), (1968, 10063), (2082, 9512), (2378, 8328), (2776, 7134), (3567, 5552), (4164, 4756)]