20793448

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:674

約数の個数: 64

約数和(自身を含む): 46872000

約数和(自身を除く): 26078552

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 442, 494, 619, 646, 884, 988, 1238, 1292, 1768, 1976, 2476, 2584, 4199, 4952, 8047, 8398, 10523, 11761, 16094, 16796, 21046, 23522, 32188, 33592, 42092, 47044, 64376, 84184, 94088, 136799, 152893, 199937, 273598, 305786, 399874, 547196, 611572, 799748, 1094392, 1223144, 1599496, 2599181, 5198362, 10396724, 20793448]

約数ペア:

[(1, 20793448), (2, 10396724), (4, 5198362), (8, 2599181), (13, 1599496), (17, 1223144), (19, 1094392), (26, 799748), (34, 611572), (38, 547196), (52, 399874), (68, 305786), (76, 273598), (104, 199937), (136, 152893), (152, 136799), (221, 94088), (247, 84184), (323, 64376), (442, 47044), (494, 42092), (619, 33592), (646, 32188), (884, 23522), (988, 21046), (1238, 16796), (1292, 16094), (1768, 11761), (1976, 10523), (2476, 8398), (2584, 8047), (4199, 4952)]