21094424

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 44906400

約数和(自身を除く): 23811976

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 53, 86, 89, 104, 106, 172, 178, 212, 344, 356, 424, 559, 689, 712, 1118, 1157, 1378, 2236, 2279, 2314, 2756, 3827, 4472, 4558, 4628, 4717, 5512, 7654, 9116, 9256, 9434, 15308, 18232, 18868, 29627, 30616, 37736, 49751, 59254, 61321, 99502, 118508, 122642, 199004, 202831, 237016, 245284, 398008, 405662, 490568, 811324, 1622648, 2636803, 5273606, 10547212, 21094424]

約数ペア:

[(1, 21094424), (2, 10547212), (4, 5273606), (8, 2636803), (13, 1622648), (26, 811324), (43, 490568), (52, 405662), (53, 398008), (86, 245284), (89, 237016), (104, 202831), (106, 199004), (172, 122642), (178, 118508), (212, 99502), (344, 61321), (356, 59254), (424, 49751), (559, 37736), (689, 30616), (712, 29627), (1118, 18868), (1157, 18232), (1378, 15308), (2236, 9434), (2279, 9256), (2314, 9116), (2756, 7654), (3827, 5512), (4472, 4717), (4558, 4628)]