19800196

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 39287808

約数和(自身を除く): 19487612

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 71, 124, 142, 173, 284, 346, 403, 692, 806, 923, 1612, 1846, 2201, 2249, 3692, 4402, 4498, 5363, 8804, 8996, 10726, 12283, 21452, 24566, 28613, 49132, 57226, 69719, 114452, 139438, 159679, 278876, 319358, 380773, 638716, 761546, 1523092, 4950049, 9900098, 19800196]

約数ペア:

[(1, 19800196), (2, 9900098), (4, 4950049), (13, 1523092), (26, 761546), (31, 638716), (52, 380773), (62, 319358), (71, 278876), (124, 159679), (142, 139438), (173, 114452), (284, 69719), (346, 57226), (403, 49132), (692, 28613), (806, 24566), (923, 21452), (1612, 12283), (1846, 10726), (2201, 8996), (2249, 8804), (3692, 5363), (4402, 4498)]