28780972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 58464000

約数和(自身を除く): 29683028

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 173, 199, 209, 346, 398, 418, 692, 796, 836, 1903, 2189, 3287, 3781, 3806, 4378, 6574, 7562, 7612, 8756, 13148, 15124, 34427, 36157, 41591, 68854, 72314, 83182, 137708, 144628, 166364, 378697, 654113, 757394, 1308226, 1514788, 2616452, 7195243, 14390486, 28780972]

約数ペア:

[(1, 28780972), (2, 14390486), (4, 7195243), (11, 2616452), (19, 1514788), (22, 1308226), (38, 757394), (44, 654113), (76, 378697), (173, 166364), (199, 144628), (209, 137708), (346, 83182), (398, 72314), (418, 68854), (692, 41591), (796, 36157), (836, 34427), (1903, 15124), (2189, 13148), (3287, 8756), (3781, 7612), (3806, 7562), (4378, 6574)]