20515721884

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{12799}}^1$

素因数の和:12983

約数の個数: 96

約数和(自身を含む): 45416448000

約数和(自身を除く): 24900726116

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 92, 131, 133, 161, 262, 266, 322, 437, 524, 532, 644, 874, 917, 1748, 1834, 2489, 3013, 3059, 3668, 4978, 6026, 6118, 9956, 12052, 12236, 12799, 17423, 21091, 25598, 34846, 42182, 51196, 57247, 69692, 84364, 89593, 114494, 179186, 228988, 243181, 294377, 358372, 400729, 486362, 588754, 801458, 972724, 1177508, 1602916, 1676669, 1702267, 2060639, 3353338, 3404534, 4121278, 5593163, 6706676, 6809068, 8242556, 11186326, 11736683, 22372652, 23473366, 31856711, 38563387, 39152141, 46946732, 63713422, 77126774, 78304282, 127426844, 154253548, 156608564, 222996977, 269943709, 445993954, 539887418, 732704353, 891987908, 1079774836, 1465408706, 2930817412, 5128930471, 10257860942, 20515721884]

約数ペア:

[(1, 20515721884), (2, 10257860942), (4, 5128930471), (7, 2930817412), (14, 1465408706), (19, 1079774836), (23, 891987908), (28, 732704353), (38, 539887418), (46, 445993954), (76, 269943709), (92, 222996977), (131, 156608564), (133, 154253548), (161, 127426844), (262, 78304282), (266, 77126774), (322, 63713422), (437, 46946732), (524, 39152141), (532, 38563387), (644, 31856711), (874, 23473366), (917, 22372652), (1748, 11736683), (1834, 11186326), (2489, 8242556), (3013, 6809068), (3059, 6706676), (3668, 5593163), (4978, 4121278), (6026, 3404534), (6118, 3353338), (9956, 2060639), (12052, 1702267), (12236, 1676669), (12799, 1602916), (17423, 1177508), (21091, 972724), (25598, 801458), (34846, 588754), (42182, 486362), (51196, 400729), (57247, 358372), (69692, 294377), (84364, 243181), (89593, 228988), (114494, 179186)]