20737904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:198

約数の個数: 80

約数和(自身を含む): 47139840

約数和(自身を除く): 26401936

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 47, 88, 92, 94, 109, 176, 184, 188, 218, 253, 368, 376, 436, 506, 517, 752, 872, 1012, 1034, 1081, 1199, 1744, 2024, 2068, 2162, 2398, 2507, 4048, 4136, 4324, 4796, 5014, 5123, 8272, 8648, 9592, 10028, 10246, 11891, 17296, 19184, 20056, 20492, 23782, 27577, 40112, 40984, 47564, 55154, 56353, 81968, 95128, 110308, 112706, 117829, 190256, 220616, 225412, 235658, 441232, 450824, 471316, 901648, 942632, 1296119, 1885264, 2592238, 5184476, 10368952, 20737904]

約数ペア:

[(1, 20737904), (2, 10368952), (4, 5184476), (8, 2592238), (11, 1885264), (16, 1296119), (22, 942632), (23, 901648), (44, 471316), (46, 450824), (47, 441232), (88, 235658), (92, 225412), (94, 220616), (109, 190256), (176, 117829), (184, 112706), (188, 110308), (218, 95128), (253, 81968), (368, 56353), (376, 55154), (436, 47564), (506, 40984), (517, 40112), (752, 27577), (872, 23782), (1012, 20492), (1034, 20056), (1081, 19184), (1199, 17296), (1744, 11891), (2024, 10246), (2068, 10028), (2162, 9592), (2398, 8648), (2507, 8272), (4048, 5123), (4136, 5014), (4324, 4796)]