20395400259

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{379}}^1\times {\mathrm{3529}}^1$

素因数の和:3964

約数の個数: 64

約数和(自身を含む): 32451148800

約数和(自身を除く): 12055748541

約数列:

[1, 3, 13, 17, 23, 39, 51, 69, 221, 299, 379, 391, 663, 897, 1137, 1173, 3529, 4927, 5083, 6443, 8717, 10587, 14781, 15249, 19329, 26151, 45877, 59993, 81167, 83759, 113321, 137631, 148189, 179979, 243501, 251277, 339963, 444567, 779909, 1055171, 1337491, 1379839, 1926457, 2339727, 3165513, 4012473, 4139517, 5779371, 17387383, 17937907, 22737347, 30762293, 52162149, 53813721, 68212041, 92286879, 295585511, 399909809, 522958981, 886756533, 1199729427, 1568876943, 6798466753, 20395400259]

約数ペア:

[(1, 20395400259), (3, 6798466753), (13, 1568876943), (17, 1199729427), (23, 886756533), (39, 522958981), (51, 399909809), (69, 295585511), (221, 92286879), (299, 68212041), (379, 53813721), (391, 52162149), (663, 30762293), (897, 22737347), (1137, 17937907), (1173, 17387383), (3529, 5779371), (4927, 4139517), (5083, 4012473), (6443, 3165513), (8717, 2339727), (10587, 1926457), (14781, 1379839), (15249, 1337491), (19329, 1055171), (26151, 779909), (45877, 444567), (59993, 339963), (81167, 251277), (83759, 243501), (113321, 179979), (137631, 148189)]