18989072

素因数分解:

$2^4\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{181}}^1$

素因数の和:351

約数の個数: 40

約数和(自身を含む): 37914240

約数和(自身を除く): 18925168

約数列:

[1, 2, 4, 8, 16, 79, 83, 158, 166, 181, 316, 332, 362, 632, 664, 724, 1264, 1328, 1448, 2896, 6557, 13114, 14299, 15023, 26228, 28598, 30046, 52456, 57196, 60092, 104912, 114392, 120184, 228784, 240368, 1186817, 2373634, 4747268, 9494536, 18989072]

約数ペア:

[(1, 18989072), (2, 9494536), (4, 4747268), (8, 2373634), (16, 1186817), (79, 240368), (83, 228784), (158, 120184), (166, 114392), (181, 104912), (316, 60092), (332, 57196), (362, 52456), (632, 30046), (664, 28598), (724, 26228), (1264, 15023), (1328, 14299), (1448, 13114), (2896, 6557)]