20774980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2377}}^1$

素因数の和:2428

約数の個数: 48

約数和(自身を含む): 47940480

約数和(自身を除く): 27165500

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 380, 437, 460, 874, 1748, 2185, 2377, 4370, 4754, 8740, 9508, 11885, 23770, 45163, 47540, 54671, 90326, 109342, 180652, 218684, 225815, 273355, 451630, 546710, 903260, 1038749, 1093420, 2077498, 4154996, 5193745, 10387490, 20774980]

約数ペア:

[(1, 20774980), (2, 10387490), (4, 5193745), (5, 4154996), (10, 2077498), (19, 1093420), (20, 1038749), (23, 903260), (38, 546710), (46, 451630), (76, 273355), (92, 225815), (95, 218684), (115, 180652), (190, 109342), (230, 90326), (380, 54671), (437, 47540), (460, 45163), (874, 23770), (1748, 11885), (2185, 9508), (2377, 8740), (4370, 4754)]