81900203

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:180

約数の個数: 64

約数和(自身を含む): 118195200

約数和(自身を除く): 36294997

約数列:

[1, 7, 11, 17, 19, 37, 77, 89, 119, 133, 187, 209, 259, 323, 407, 623, 629, 703, 979, 1309, 1463, 1513, 1691, 2261, 2849, 3293, 3553, 4403, 4921, 6853, 6919, 7733, 10591, 11837, 11951, 16643, 18601, 23051, 24871, 28747, 36223, 48433, 54131, 55981, 62567, 83657, 116501, 130207, 131461, 201229, 253561, 316217, 391867, 437969, 615791, 688237, 920227, 1063639, 2213519, 4310537, 4817659, 7445473, 11700029, 81900203]

約数ペア:

[(1, 81900203), (7, 11700029), (11, 7445473), (17, 4817659), (19, 4310537), (37, 2213519), (77, 1063639), (89, 920227), (119, 688237), (133, 615791), (187, 437969), (209, 391867), (259, 316217), (323, 253561), (407, 201229), (623, 131461), (629, 130207), (703, 116501), (979, 83657), (1309, 62567), (1463, 55981), (1513, 54131), (1691, 48433), (2261, 36223), (2849, 28747), (3293, 24871), (3553, 23051), (4403, 18601), (4921, 16643), (6853, 11951), (6919, 11837), (7733, 10591)]