20339956

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 49109760

約数和(自身を除く): 28769804

約数列:

[1, 2, 4, 7, 13, 14, 17, 19, 26, 28, 34, 38, 52, 68, 76, 91, 119, 133, 173, 182, 221, 238, 247, 266, 323, 346, 364, 442, 476, 494, 532, 646, 692, 884, 988, 1211, 1292, 1547, 1729, 2249, 2261, 2422, 2941, 3094, 3287, 3458, 4199, 4498, 4522, 4844, 5882, 6188, 6574, 6916, 8398, 8996, 9044, 11764, 13148, 15743, 16796, 20587, 23009, 29393, 31486, 38233, 41174, 42731, 46018, 55879, 58786, 62972, 76466, 82348, 85462, 92036, 111758, 117572, 152932, 170924, 223516, 267631, 299117, 391153, 535262, 598234, 726427, 782306, 1070524, 1196468, 1452854, 1564612, 2905708, 5084989, 10169978, 20339956]

約数ペア:

[(1, 20339956), (2, 10169978), (4, 5084989), (7, 2905708), (13, 1564612), (14, 1452854), (17, 1196468), (19, 1070524), (26, 782306), (28, 726427), (34, 598234), (38, 535262), (52, 391153), (68, 299117), (76, 267631), (91, 223516), (119, 170924), (133, 152932), (173, 117572), (182, 111758), (221, 92036), (238, 85462), (247, 82348), (266, 76466), (323, 62972), (346, 58786), (364, 55879), (442, 46018), (476, 42731), (494, 41174), (532, 38233), (646, 31486), (692, 29393), (884, 23009), (988, 20587), (1211, 16796), (1292, 15743), (1547, 13148), (1729, 11764), (2249, 9044), (2261, 8996), (2422, 8398), (2941, 6916), (3094, 6574), (3287, 6188), (3458, 5882), (4199, 4844), (4498, 4522)]