20796972

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{313}}^1$

素因数の和:447

約数の個数: 72

約数和(自身を含む): 57130416

約数和(自身を除く): 36333444

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 113, 147, 196, 226, 294, 313, 339, 452, 588, 626, 678, 791, 939, 1252, 1356, 1582, 1878, 2191, 2373, 3164, 3756, 4382, 4746, 5537, 6573, 8764, 9492, 11074, 13146, 15337, 16611, 22148, 26292, 30674, 33222, 35369, 46011, 61348, 66444, 70738, 92022, 106107, 141476, 184044, 212214, 247583, 424428, 495166, 742749, 990332, 1485498, 1733081, 2970996, 3466162, 5199243, 6932324, 10398486, 20796972]

約数ペア:

[(1, 20796972), (2, 10398486), (3, 6932324), (4, 5199243), (6, 3466162), (7, 2970996), (12, 1733081), (14, 1485498), (21, 990332), (28, 742749), (42, 495166), (49, 424428), (84, 247583), (98, 212214), (113, 184044), (147, 141476), (196, 106107), (226, 92022), (294, 70738), (313, 66444), (339, 61348), (452, 46011), (588, 35369), (626, 33222), (678, 30674), (791, 26292), (939, 22148), (1252, 16611), (1356, 15337), (1582, 13146), (1878, 11074), (2191, 9492), (2373, 8764), (3164, 6573), (3756, 5537), (4382, 4746)]