21015719465

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^2\times {\mathrm{293}}^1\times {\mathrm{317}}^1$

素因数の和:746

約数の個数: 48

約数和(自身を含む): 27808634448

約数和(自身を除く): 6792914983

約数列:

[1, 5, 13, 59, 65, 293, 295, 317, 767, 1465, 1585, 3481, 3809, 3835, 4121, 17287, 17405, 18703, 19045, 20605, 45253, 86435, 92881, 93515, 224731, 226265, 243139, 464405, 1019933, 1103477, 1123655, 1207453, 1215695, 5099665, 5479979, 5517385, 6037265, 13259129, 14345201, 27399895, 66295645, 71239727, 71726005, 323318761, 356198635, 1616593805, 4203143893, 21015719465]

約数ペア:

[(1, 21015719465), (5, 4203143893), (13, 1616593805), (59, 356198635), (65, 323318761), (293, 71726005), (295, 71239727), (317, 66295645), (767, 27399895), (1465, 14345201), (1585, 13259129), (3481, 6037265), (3809, 5517385), (3835, 5479979), (4121, 5099665), (17287, 1215695), (17405, 1207453), (18703, 1123655), (19045, 1103477), (20605, 1019933), (45253, 464405), (86435, 243139), (92881, 226265), (93515, 224731)]