21980182

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{257}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 39009600

約数和(自身を除く): 17029418

約数列:

[1, 2, 7, 14, 41, 82, 149, 257, 287, 298, 514, 574, 1043, 1799, 2086, 3598, 6109, 10537, 12218, 21074, 38293, 42763, 73759, 76586, 85526, 147518, 268051, 536102, 1570013, 3140026, 10990091, 21980182]

約数ペア:

[(1, 21980182), (2, 10990091), (7, 3140026), (14, 1570013), (41, 536102), (82, 268051), (149, 147518), (257, 85526), (287, 76586), (298, 73759), (514, 42763), (574, 38293), (1043, 21074), (1799, 12218), (2086, 10537), (3598, 6109)]