19716872

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 25643128

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 139, 149, 238, 278, 298, 476, 556, 596, 952, 973, 1043, 1112, 1192, 1946, 2086, 2363, 2533, 3892, 4172, 4726, 5066, 7784, 8344, 9452, 10132, 16541, 17731, 18904, 20264, 20711, 33082, 35462, 41422, 66164, 70924, 82844, 132328, 141848, 144977, 165688, 289954, 352087, 579908, 704174, 1159816, 1408348, 2464609, 2816696, 4929218, 9858436, 19716872]

約数ペア:

[(1, 19716872), (2, 9858436), (4, 4929218), (7, 2816696), (8, 2464609), (14, 1408348), (17, 1159816), (28, 704174), (34, 579908), (56, 352087), (68, 289954), (119, 165688), (136, 144977), (139, 141848), (149, 132328), (238, 82844), (278, 70924), (298, 66164), (476, 41422), (556, 35462), (596, 33082), (952, 20711), (973, 20264), (1043, 18904), (1112, 17731), (1192, 16541), (1946, 10132), (2086, 9452), (2363, 8344), (2533, 7784), (3892, 5066), (4172, 4726)]