18377788

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{89}}^1$

素因数の和:155

約数の個数: 72

約数和(自身を含む): 40325040

約数和(自身を除く): 21947252

約数列:

[1, 2, 4, 11, 13, 19, 22, 26, 38, 44, 52, 76, 89, 143, 178, 209, 247, 286, 356, 361, 418, 494, 572, 722, 836, 979, 988, 1157, 1444, 1691, 1958, 2314, 2717, 3382, 3916, 3971, 4628, 4693, 5434, 6764, 7942, 9386, 10868, 12727, 15884, 18601, 18772, 21983, 25454, 32129, 37202, 43966, 50908, 51623, 64258, 74404, 87932, 103246, 128516, 206492, 241813, 353419, 417677, 483626, 706838, 835354, 967252, 1413676, 1670708, 4594447, 9188894, 18377788]

約数ペア:

[(1, 18377788), (2, 9188894), (4, 4594447), (11, 1670708), (13, 1413676), (19, 967252), (22, 835354), (26, 706838), (38, 483626), (44, 417677), (52, 353419), (76, 241813), (89, 206492), (143, 128516), (178, 103246), (209, 87932), (247, 74404), (286, 64258), (356, 51623), (361, 50908), (418, 43966), (494, 37202), (572, 32129), (722, 25454), (836, 21983), (979, 18772), (988, 18601), (1157, 15884), (1444, 12727), (1691, 10868), (1958, 9386), (2314, 7942), (2717, 6764), (3382, 5434), (3916, 4693), (3971, 4628)]