20319369

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 34276608

約数和(自身を除く): 13957239

約数列:

[1, 3, 7, 17, 21, 47, 49, 51, 119, 141, 147, 173, 329, 357, 519, 799, 833, 987, 1211, 2303, 2397, 2499, 2941, 3633, 5593, 6909, 8131, 8477, 8823, 16779, 20587, 24393, 25431, 39151, 56917, 61761, 117453, 138227, 144109, 170751, 398419, 414681, 432327, 967589, 1195257, 2902767, 6773123, 20319369]

約数ペア:

[(1, 20319369), (3, 6773123), (7, 2902767), (17, 1195257), (21, 967589), (47, 432327), (49, 414681), (51, 398419), (119, 170751), (141, 144109), (147, 138227), (173, 117453), (329, 61761), (357, 56917), (519, 39151), (799, 25431), (833, 24393), (987, 20587), (1211, 16779), (2303, 8823), (2397, 8477), (2499, 8131), (2941, 6909), (3633, 5593)]