18019664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2113}}^1$

素因数の和:2175

約数の個数: 40

約数和(自身を含む): 38533992

約数和(自身を除く): 20514328

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2113, 2132, 4226, 4264, 8452, 8528, 16904, 27469, 33808, 54938, 86633, 109876, 173266, 219752, 346532, 439504, 693064, 1126229, 1386128, 2252458, 4504916, 9009832, 18019664]

約数ペア:

[(1, 18019664), (2, 9009832), (4, 4504916), (8, 2252458), (13, 1386128), (16, 1126229), (26, 693064), (41, 439504), (52, 346532), (82, 219752), (104, 173266), (164, 109876), (208, 86633), (328, 54938), (533, 33808), (656, 27469), (1066, 16904), (2113, 8528), (2132, 8452), (4226, 4264)]