19188988

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1$

素因数の和:491

約数の個数: 72

約数和(自身を含む): 44643312

約数和(自身を除く): 25454324

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 49, 52, 68, 91, 98, 119, 182, 196, 221, 238, 364, 442, 443, 476, 637, 833, 884, 886, 1274, 1547, 1666, 1772, 2548, 3094, 3101, 3332, 5759, 6188, 6202, 7531, 10829, 11518, 12404, 15062, 21658, 21707, 23036, 30124, 40313, 43316, 43414, 52717, 80626, 86828, 97903, 105434, 161252, 195806, 210868, 282191, 369019, 391612, 564382, 685321, 738038, 1128764, 1370642, 1476076, 2741284, 4797247, 9594494, 19188988]

約数ペア:

[(1, 19188988), (2, 9594494), (4, 4797247), (7, 2741284), (13, 1476076), (14, 1370642), (17, 1128764), (26, 738038), (28, 685321), (34, 564382), (49, 391612), (52, 369019), (68, 282191), (91, 210868), (98, 195806), (119, 161252), (182, 105434), (196, 97903), (221, 86828), (238, 80626), (364, 52717), (442, 43414), (443, 43316), (476, 40313), (637, 30124), (833, 23036), (884, 21707), (886, 21658), (1274, 15062), (1547, 12404), (1666, 11518), (1772, 10829), (2548, 7531), (3094, 6202), (3101, 6188), (3332, 5759)]