20899116

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{347}}^1$

素因数の和:603

約数の個数: 72

約数和(自身を含む): 60802560

約数和(自身を除く): 39903444

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 239, 252, 347, 478, 694, 717, 956, 1041, 1388, 1434, 1673, 2082, 2151, 2429, 2868, 3123, 3346, 4164, 4302, 4858, 5019, 6246, 6692, 7287, 8604, 9716, 10038, 12492, 14574, 15057, 20076, 21861, 29148, 30114, 43722, 60228, 82933, 87444, 165866, 248799, 331732, 497598, 580531, 746397, 995196, 1161062, 1492794, 1741593, 2322124, 2985588, 3483186, 5224779, 6966372, 10449558, 20899116]

約数ペア:

[(1, 20899116), (2, 10449558), (3, 6966372), (4, 5224779), (6, 3483186), (7, 2985588), (9, 2322124), (12, 1741593), (14, 1492794), (18, 1161062), (21, 995196), (28, 746397), (36, 580531), (42, 497598), (63, 331732), (84, 248799), (126, 165866), (239, 87444), (252, 82933), (347, 60228), (478, 43722), (694, 30114), (717, 29148), (956, 21861), (1041, 20076), (1388, 15057), (1434, 14574), (1673, 12492), (2082, 10038), (2151, 9716), (2429, 8604), (2868, 7287), (3123, 6692), (3346, 6246), (4164, 5019), (4302, 4858)]