21209084

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 42147840

約数和(自身を除く): 20938756

約数列:

[1, 2, 4, 13, 26, 31, 52, 59, 62, 118, 124, 223, 236, 403, 446, 767, 806, 892, 1534, 1612, 1829, 2899, 3068, 3658, 5798, 6913, 7316, 11596, 13157, 13826, 23777, 26314, 27652, 47554, 52628, 89869, 95108, 171041, 179738, 342082, 359476, 407867, 684164, 815734, 1631468, 5302271, 10604542, 21209084]

約数ペア:

[(1, 21209084), (2, 10604542), (4, 5302271), (13, 1631468), (26, 815734), (31, 684164), (52, 407867), (59, 359476), (62, 342082), (118, 179738), (124, 171041), (223, 95108), (236, 89869), (403, 52628), (446, 47554), (767, 27652), (806, 26314), (892, 23777), (1534, 13826), (1612, 13157), (1829, 11596), (2899, 7316), (3068, 6913), (3658, 5798)]