28070679

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{397}}^1$

素因数の和:464

約数の個数: 48

約数和(自身を含む): 48275808

約数和(自身を除く): 20205129

約数列:

[1, 3, 7, 13, 21, 37, 39, 49, 91, 111, 147, 259, 273, 397, 481, 637, 777, 1191, 1443, 1813, 1911, 2779, 3367, 5161, 5439, 8337, 10101, 14689, 15483, 19453, 23569, 36127, 44067, 58359, 70707, 102823, 108381, 190957, 252889, 308469, 572871, 719761, 758667, 1336699, 2159283, 4010097, 9356893, 28070679]

約数ペア:

[(1, 28070679), (3, 9356893), (7, 4010097), (13, 2159283), (21, 1336699), (37, 758667), (39, 719761), (49, 572871), (91, 308469), (111, 252889), (147, 190957), (259, 108381), (273, 102823), (397, 70707), (481, 58359), (637, 44067), (777, 36127), (1191, 23569), (1443, 19453), (1813, 15483), (1911, 14689), (2779, 10101), (3367, 8337), (5161, 5439)]