18990088

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{467}}^1$

素因数の和:526

約数の個数: 64

約数和(自身を含む): 42456960

約数和(自身を除く): 23466872

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 221, 299, 391, 442, 467, 598, 782, 884, 934, 1196, 1564, 1768, 1868, 2392, 3128, 3736, 5083, 6071, 7939, 10166, 10741, 12142, 15878, 20332, 21482, 24284, 31756, 40664, 42964, 48568, 63512, 85928, 103207, 139633, 182597, 206414, 279266, 365194, 412828, 558532, 730388, 825656, 1117064, 1460776, 2373761, 4747522, 9495044, 18990088]

約数ペア:

[(1, 18990088), (2, 9495044), (4, 4747522), (8, 2373761), (13, 1460776), (17, 1117064), (23, 825656), (26, 730388), (34, 558532), (46, 412828), (52, 365194), (68, 279266), (92, 206414), (104, 182597), (136, 139633), (184, 103207), (221, 85928), (299, 63512), (391, 48568), (442, 42964), (467, 40664), (598, 31756), (782, 24284), (884, 21482), (934, 20332), (1196, 15878), (1564, 12142), (1768, 10741), (1868, 10166), (2392, 7939), (3128, 6071), (3736, 5083)]