19983474

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{163}}^1$

素因数の和:324

約数の個数: 72

約数和(自身を含む): 51040080

約数和(自身を除く): 31056606

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 139, 147, 163, 278, 294, 326, 417, 441, 489, 834, 882, 973, 978, 1141, 1251, 1467, 1946, 2282, 2502, 2919, 2934, 3423, 5838, 6811, 6846, 7987, 8757, 10269, 13622, 15974, 17514, 20433, 20538, 22657, 23961, 40866, 45314, 47922, 61299, 67971, 71883, 122598, 135942, 143766, 158599, 203913, 317198, 407826, 475797, 951594, 1110193, 1427391, 2220386, 2854782, 3330579, 6661158, 9991737, 19983474]

約数ペア:

[(1, 19983474), (2, 9991737), (3, 6661158), (6, 3330579), (7, 2854782), (9, 2220386), (14, 1427391), (18, 1110193), (21, 951594), (42, 475797), (49, 407826), (63, 317198), (98, 203913), (126, 158599), (139, 143766), (147, 135942), (163, 122598), (278, 71883), (294, 67971), (326, 61299), (417, 47922), (441, 45314), (489, 40866), (834, 23961), (882, 22657), (973, 20538), (978, 20433), (1141, 17514), (1251, 15974), (1467, 13622), (1946, 10269), (2282, 8757), (2502, 7987), (2919, 6846), (2934, 6811), (3423, 5838)]