21399476

素因数分解:

$2^2\times 7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{101}}^1$

素因数の和:189

約数の個数: 72

約数和(自身を含む): 46884096

約数和(自身を除く): 25484620

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 47, 49, 92, 94, 98, 101, 161, 188, 196, 202, 322, 329, 404, 644, 658, 707, 1081, 1127, 1316, 1414, 2162, 2254, 2303, 2323, 2828, 4324, 4508, 4606, 4646, 4747, 4949, 7567, 9212, 9292, 9494, 9898, 15134, 16261, 18988, 19796, 30268, 32522, 33229, 52969, 65044, 66458, 105938, 109181, 113827, 132916, 211876, 218362, 227654, 232603, 436724, 455308, 465206, 764267, 930412, 1528534, 3057068, 5349869, 10699738, 21399476]

約数ペア:

[(1, 21399476), (2, 10699738), (4, 5349869), (7, 3057068), (14, 1528534), (23, 930412), (28, 764267), (46, 465206), (47, 455308), (49, 436724), (92, 232603), (94, 227654), (98, 218362), (101, 211876), (161, 132916), (188, 113827), (196, 109181), (202, 105938), (322, 66458), (329, 65044), (404, 52969), (644, 33229), (658, 32522), (707, 30268), (1081, 19796), (1127, 18988), (1316, 16261), (1414, 15134), (2162, 9898), (2254, 9494), (2303, 9292), (2323, 9212), (2828, 7567), (4324, 4949), (4508, 4747), (4606, 4646)]