19974052

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 41545728

約数和(自身を除く): 21571676

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 127, 137, 164, 254, 274, 287, 508, 548, 574, 889, 959, 1148, 1778, 1918, 3556, 3836, 5207, 5617, 10414, 11234, 17399, 20828, 22468, 34798, 36449, 39319, 69596, 72898, 78638, 121793, 145796, 157276, 243586, 487172, 713359, 1426718, 2853436, 4993513, 9987026, 19974052]

約数ペア:

[(1, 19974052), (2, 9987026), (4, 4993513), (7, 2853436), (14, 1426718), (28, 713359), (41, 487172), (82, 243586), (127, 157276), (137, 145796), (164, 121793), (254, 78638), (274, 72898), (287, 69596), (508, 39319), (548, 36449), (574, 34798), (889, 22468), (959, 20828), (1148, 17399), (1778, 11234), (1918, 10414), (3556, 5617), (3836, 5207)]