21392358

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^2\times {\mathrm{17}}^2\times {\mathrm{73}}^1$

素因数の和:138

約数の個数: 72

約数和(自身を含む): 49888728

約数和(自身を除く): 28496370

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 51, 73, 78, 102, 146, 169, 219, 221, 289, 338, 438, 442, 507, 578, 663, 867, 949, 1014, 1241, 1326, 1734, 1898, 2482, 2847, 2873, 3723, 3757, 5694, 5746, 7446, 7514, 8619, 11271, 12337, 16133, 17238, 21097, 22542, 24674, 32266, 37011, 42194, 48399, 48841, 63291, 74022, 96798, 97682, 126582, 146523, 209729, 274261, 293046, 419458, 548522, 629187, 822783, 1258374, 1645566, 3565393, 7130786, 10696179, 21392358]

約数ペア:

[(1, 21392358), (2, 10696179), (3, 7130786), (6, 3565393), (13, 1645566), (17, 1258374), (26, 822783), (34, 629187), (39, 548522), (51, 419458), (73, 293046), (78, 274261), (102, 209729), (146, 146523), (169, 126582), (219, 97682), (221, 96798), (289, 74022), (338, 63291), (438, 48841), (442, 48399), (507, 42194), (578, 37011), (663, 32266), (867, 24674), (949, 22542), (1014, 21097), (1241, 17238), (1326, 16133), (1734, 12337), (1898, 11271), (2482, 8619), (2847, 7514), (2873, 7446), (3723, 5746), (3757, 5694)]